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A Guide for Gardeners in<br />

<strong>Queensland</strong> <strong>Darling</strong> <strong>Downs</strong> <strong>Darling</strong><br />

<strong>Downs</strong><br />

The Nursery Industry -<br />

Protecting Our Environment


2<br />

1) Contents<br />

1. Contents<br />

2. Acknowledgements<br />

3. Introduction from the Ministers<br />

4.<br />

Introduction<br />

5.<br />

What is <strong>Grow</strong> <strong>Me</strong> <strong>Instead</strong>?<br />

6.<br />

Establishing the criteria for <strong>Grow</strong> <strong>Me</strong> <strong>Instead</strong><br />

7.<br />

What you can do!<br />

8.<br />

Controlling weeds<br />

9.<br />

The invasive plants and their alternatives<br />

Trees and Shrubs<br />

Climbing and Ground Cover Plants<br />

Berried Plants<br />

Grasses<br />

Bulbous Plants<br />

Succulent Plants<br />

Aquatic Plants<br />

1 0.<br />

Invasive plant index<br />

1 1.<br />

Further information and additional resources<br />

Cover photo courtesy of Toowoomba Regional Council


2) Acknowledgements<br />

The original <strong>Queensland</strong> <strong>Grow</strong> <strong>Me</strong> <strong>Instead</strong> project was completed by NGIQ<br />

through funding from the Australian Government's Caring for our Country.<br />

Australian Government NRM Team<br />

GPO Box 787<br />

Canberra ACT 2601 Australia<br />

Ph 1 800 552008 (Toll Free)<br />

Web www.nrm.gov.au<br />

NGIQ acknowledge the generous contribution made by <strong>Queensland</strong> Murray<br />

<strong>Darling</strong> Committee (QMDC) in producing information for the <strong>Darling</strong> <strong>Downs</strong><br />

bioregion.<br />

Special thanks go to <strong>Grow</strong> <strong>Me</strong> <strong>Instead</strong> project coordinator Barry Naylor (NGIQ)<br />

and project manager John McDonald (Nursery Industry Development Manager<br />

NGIQ).<br />

The Nursery and Garden Industry <strong>Queensland</strong> would like to acknowledge the<br />

people who generously contributed their time and expertise and who provided a<br />

wealth of information towards the establishment of <strong>Grow</strong> <strong>Me</strong> <strong>Instead</strong> <strong>Darling</strong><br />

<strong>Downs</strong>. Special thanks go to the members of the <strong>Darling</strong> <strong>Downs</strong> <strong>Grow</strong> <strong>Me</strong><br />

<strong>Instead</strong> Reference Group;<br />

Damian Cumming Ausplant Nursery<br />

Pedro Hodgson Biosecurity <strong>Queensland</strong><br />

Craig Hunter QMDC<br />

Peter MacQueen Southern <strong>Queensland</strong> Institute of TAFE<br />

Sandy Martin Martin Garden Concepts<br />

Rachel McFadyen Weed Society of <strong>Queensland</strong><br />

<strong>Me</strong>redith Richters True Blue Garden Centre<br />

Craig Rosenthal Toowoomba Regional Council<br />

Brian Sams Southern <strong>Queensland</strong> Institute of TAFE<br />

Kate Steel QMDC<br />

Renee Stephenson QMDC<br />

Malcom Sypher Hirstglen Nursery<br />

The many people and organisations who contributed photographs used in this<br />

website.<br />

Funded by:<br />

3


The nursery and gardening industry has joined with the Australian<br />

Government in the fight against invasive garden plants. In<br />

championing this initiative, Nursery and Gardening Industry<br />

Australia (NGIA) is taking a significant step forward in tackling one<br />

of the nation’s most serious environmental problems – the spread<br />

of weeds.<br />

The <strong>Grow</strong> <strong>Me</strong> <strong>Instead</strong> campaign is a great industry-driven initiative<br />

providing relevant local information to nursery operators and<br />

gardeners about plants which are potential weeds in their area and<br />

less invasive plants for gardeners to use.<br />

This cooperation between the horticulture and nursery industries,<br />

the Australian Government and weed management bodies will help<br />

ensure horticulturists and gardeners receive the information they<br />

need to combat the spread of weeds.<br />

It is estimated that weeds cost the Australian agricultural industry<br />

around $4 billion a year. The real cost of weeds to the environment<br />

is difficult to calculate, however it is likely to be at least equal to the<br />

cost to agriculture.<br />

Of the almost 3000 introduced plant species now known to be<br />

established in the Australian environment, 65% are ‘escaped’<br />

garden plants. An important step in preventing the spread of weeds<br />

is public education to help change attitudes and behaviours that<br />

contribute to the weed problem.<br />

The Government is committed to investing in initiatives that have<br />

real on-ground benefits for the environment and for industry. We<br />

commend this initiative to you.<br />

4<br />

3) Introduction from<br />

the Ministers<br />

The Hon Peter Garrett AM MP<br />

Minister for the Environment, Water, Heritage and the Arts<br />

The Hon Tony Burke MP<br />

Minister for Agriculture, Fisheries and Forestry


4) Introduction<br />

The Nursery and Garden Industry in Australia employs about<br />

45,000 people in some 22,000 businesses across the country. For<br />

many years the Industry has been conscious of their environmental<br />

responsibilities and they have been proactive in furthering<br />

educational programs, including those concerning invasive garden<br />

plants. Garden escapes are not a new issue: weeds have been<br />

around since the first settlers brought along reminders of ‘home’<br />

to help them settle into a new and strange land. How strange the<br />

Australian landscape must have seemed then, and how natural it<br />

would have been for the settlers to want only the tried and true<br />

familiar garden plants of the British Isles. Despite the difficulties<br />

of creating a garden in the Antipodes, it took many years for the<br />

average Australian to appreciate the native ora<br />

of this great land.<br />

Then, there were the early ’acclimatisation societies’ who thought it<br />

a good idea to introduce plants and animals from the old country<br />

and also to spread Australian native plants from state to state.<br />

Although great damage to the environment has occurred as a result<br />

of these indiscriminate introductions, this has not been solely the<br />

fault of the horticultural industry: certainly other industries have<br />

contributed. Graziers have imported new grasses and fodder crops<br />

and there were ‘accidental’ imports that came about unwittingly<br />

through inappropriate packaging, movement of plant and<br />

machinery, as seed in fodder and in ships’ ballast.<br />

However, the weed issue and who is actually responsible should<br />

not become a ‘blame game’. Together we must seek to repair what<br />

damage we can and to work together as a community to prevent<br />

similar damage occurring in the future.<br />

The Nursery & Garden Industry is actively participating in lessening<br />

the availability of invasive plants in Australia by preventing their<br />

production and sale. The Industry has recently established a greater<br />

understanding and cooperation with both State and Federal<br />

Governments, culminating in this important ‘<strong>Grow</strong> <strong>Me</strong> <strong>Instead</strong>’<br />

booklet.<br />

Greater awareness and education of the home gardener is a major<br />

part of the answer to this problem. By using the information in the<br />

‘<strong>Grow</strong> <strong>Me</strong> <strong>Instead</strong>’ booklet as a guide and consulting with your local<br />

garden centre or plant nursery, you can help to minimise garden<br />

escapes and create a better environmental future for following<br />

generations of gardeners.<br />

5


6<br />

5) What is <strong>Grow</strong> <strong>Me</strong><br />

<strong>Instead</strong>?<br />

The original ‘<strong>Grow</strong> <strong>Me</strong> <strong>Instead</strong>’ booklet developed by the Nursery<br />

& Garden Industry NSW & ACT (NGINA) has now been extended<br />

as a national program by the Nursery & Garden Industry Australia<br />

(NGIA), in partnership with the Federal Government, to reduce the<br />

numbers and impact of invasive plants in Australia.<br />

‘An environmentally invasive plant’ is just another term for a<br />

weed. Quite simply, a weed is any plant that poses a threat to the<br />

environment, adversely impacts human or animal health, or causes<br />

crop or stock losses. For most gardeners, many of the characteristics<br />

we most desire in garden plants are the same as those that make<br />

them weedy: i.e. plants that are fast growing and disease resilient<br />

and those which reproduce easily by the distribution of seeds or<br />

plant parts.<br />

A modern definition of a weed is “a plant that requires some form<br />

of action to reduce its effect on the economy, the environment,<br />

human health and amenity”.<br />

Many of the plants that are now considered to be ‘environmental<br />

weeds’ were introduced by early settlers, or by gardeners and<br />

farmers who had little or no knowledge of their future impact on<br />

the native environment. It is only in recent years that this threat has<br />

become apparent.<br />

Weediness is not confined to introductions from overseas. Some<br />

Australian native plants introduced from other regions may impact<br />

adversely on the natural environment. Non-indigenous (i.e. not<br />

local) species may invade and displace species natural to that area or<br />

they may cross pollinate to produce new species which may in time<br />

alter regional biodiversity. Cootamundra Wattle (Acacia baileyana)<br />

is a good example of the former, while many eucalypts are known<br />

to interbreed.<br />

Introduced species may sometimes be controlled in a foreign climate<br />

by various vectors such as small animals, insects, diseases or climatic<br />

conditions such as frost, thus reducing potential invasiveness.<br />

To gardeners, farmers or botanists, the term ‘weed’ may mean<br />

different things. Pasture weeds reduce the productivity of agricultural<br />

land and may also have negative effects on human and animal<br />

health. Environmental weeds cause various problems in natural<br />

areas and ecosystems and the cost of control for both farmers and<br />

government is estimated at billions of dollars per annum.


The purpose of this <strong>Grow</strong> <strong>Me</strong> <strong>Instead</strong> booklet...<br />

is to identify common garden plants that have now become<br />

environmental weeds in your local area, and to suggest better,<br />

alternative plants that benefit garden diversity while lessening their<br />

potential to become weeds of the future.<br />

Apart from nurseries, garden centres or the resources of the local<br />

botanic gardens, valuable information may be provided by the<br />

Natural Resource Management Boards or you may wish to check<br />

out their websites. Here you will find<br />

lists of declared weeds for the<br />

local area and contact details should you need further information<br />

regarding invasive plant identification and approved methods of<br />

disposal.<br />

It is important to reduce the spread of<br />

environmental weeds because...<br />

better and more effective management of invasive plants will help to<br />

reduce the high cost of chemical control, and to reduce the amount<br />

of time and energy lost in management of weeds in productive<br />

land for food crops, grazing land, cut owers and forestry. Weed<br />

management in public spaces and on natural heritage land is costly,<br />

laborious and at times seems overwhelming.<br />

Invasive plants are defined and grouped as follows.<br />

1. Noxious weeds - are those legally declared as noxious<br />

plants by the various State or Territory Governments. The<br />

declaration of noxious weeds will vary from state to state<br />

and from region to region within a state. In general, most<br />

state legislation will say that declared noxious plants cannot<br />

be grown, sold or transported or transposed, and removal is<br />

required.<br />

2. Weeds of National Signifcance (‘WoNS’) - are some of<br />

the most signifcant weeds in Australia. All WoNS have been<br />

declared illegal for sale in each state of Australia.<br />

3. Environmental weeds - plants that are or have the<br />

potential to impact the natural environment by destroying<br />

habitat or over-running indigenous species and altering local<br />

biodiversity. Many of our worst environmental weeds are<br />

garden escapes.<br />

4. Agricultural & Horticultural weeds - are those plants<br />

that have a negative effect on crop or animal production.<br />

This may be through the infiltration of weed seed in grain<br />

crops, burrs in wool production or weeds which make<br />

animals sick or cause death. In the horticultural industry,<br />

weeds within cut flower, fruit and vegetable crops can<br />

harbour pests and diseases which reduce productivity.<br />

7


8<br />

6) Establishing the criteria<br />

for <strong>Grow</strong> <strong>Me</strong> <strong>Instead</strong><br />

It has been very important to establish a set of consistent criteria<br />

which could be adhered to across all regions and states.<br />

A) The Invasive Plants<br />

The Nursery & Garden Industry <strong>Queensland</strong>, in consultation with<br />

its members, State and Local Governments and a wide range of<br />

interested stakeholders has developed a list of 30 invasive garden<br />

plants. There are several weed lists in existence provided by a variety<br />

of environmental and conservation organisations that often include<br />

species which are problems only in their local area. As such, including<br />

all garden escapes in a national list was considered inappropriate.<br />

Therefore, the ‘weediness’ criteria for inclusion in ‘<strong>Grow</strong> <strong>Me</strong> <strong>Instead</strong>’<br />

were determined as follows.<br />

1. The plant must be shown to be invasive across more than<br />

one area or part of the bioregion.<br />

2. It can be either an Australian native or imported (exotic)<br />

species.<br />

3. The plant must be shown to or have potential to damage<br />

the environment, human or animal health or create stock or<br />

crop losses.<br />

4. The plant must be proven to have naturalised in bushland to<br />

the detriment of the natural environment.<br />

This ‘<strong>Grow</strong> <strong>Me</strong> <strong>Instead</strong>’ list is not definitive for each area or<br />

region of <strong>Queensland</strong>. There may be other problem plants in your<br />

locality, most of these being included in lists prepared by your local<br />

government or other relevant organisation. In addition to the plants<br />

listed in ‘<strong>Grow</strong> <strong>Me</strong> <strong>Instead</strong>’, you should also be aware of your local<br />

problem plants.<br />

B) The Alternatives<br />

Not all of the alternatives would be suitable across the broad range<br />

of soils and climates of <strong>Queensland</strong>. Therefore, consideration of<br />

these differences and adaptation to your local area or region will<br />

be necessary.<br />

For this booklet to be of benefit in helping you select ‘good’ garden<br />

plants, it should be used as a guide to plant selection. In addition<br />

to the listed alternatives, there will be many other plant selections<br />

available to you at your local nursery or garden centre. Together with<br />

their help, expertise and guidance, you needn’t have any fear that<br />

your garden will become an environmental hazard in the future.<br />

Selection criteria for the ‘non-weedy plants’ included:<br />

Must be recognised as non-invasive.<br />

Must be readily available to the gardening public.<br />

Must be reliable garden plants.<br />

We have endeavoured to recommend at least one Australian native<br />

plant alternative for all of the invasive species listed in the booklet.


The role of the nursery industry<br />

In more recent years, the Nursery & Garden Industry has been<br />

environmentally responsible by encouraging the production of noninvasive<br />

plants that do not require copious amounts of reticulated<br />

water, fertiliser or other chemicals to thrive in the garden.<br />

The Nursery & Garden Industry in Australia instigates accreditation<br />

programs among its members, and it continually strives to establish<br />

standards of excellence in plant production in order to provide<br />

trustworthy products.<br />

The Nursery & Garden Industry provides information not only<br />

through publications such as the ‘<strong>Grow</strong> <strong>Me</strong> <strong>Instead</strong>’ booklet, but<br />

also through its education programs. Many educational and selfhelp<br />

programs are also offered by local nursery or garden centres.<br />

Your local nursery or garden centre can assist you by:<br />

Helping with identification of suspected ‘weedy’ plants;<br />

Providing information concerning local invasive plants;<br />

Offering alternatives and environmentally friendly plants;<br />

Providing information concerning good weed management,<br />

disposal of unwanted plant material, further preventing the<br />

spread in your garden and neighbourhood.<br />

On a broader scale the Nursery & Garden Industry can assist by:<br />

Increasing public awareness through education programs;<br />

Promoting the sale of superior, alternative plants thereby<br />

reducing the number of invasive plants grown and sold;<br />

Working with government, with research organisations, the<br />

media and other key stakeholders to help reduce the distribution<br />

and sale of undesirable plants.<br />

9


10<br />

7) What you can do!<br />

By checking the plants in your garden with the help of the ‘<strong>Grow</strong> <strong>Me</strong><br />

<strong>Instead</strong>’ booklet you may identify plants you should replace, while<br />

at the same time find others you may enjoy growing more!<br />

Your local nursery or garden centre plant specialists will have<br />

additional suggestions of plants proven to be successful in your area.<br />

Plants purchased in another region, no matter how lovely they are,<br />

may not always prove hardy in yours. Furthermore, by purchasing<br />

plants from another region you may unwittingly introduce another<br />

environmental weed!<br />

It is also a good idea to consider your garden setting and to then<br />

make a list of the plants to fill your specifichouse and garden needs.<br />

For example, aspects of the house exposed to hot western sun will<br />

benefit from a deciduous tree to provide summer shade and will<br />

allow penetration of winter sun, while privacy from neighbours can<br />

be provided by carefully chosen hedging plants. Or you may simply<br />

want to create beds or borders of colourful owers<br />

and dramatic<br />

foliages to enhance your home décor. All of these wishes and needs<br />

are valid and they will vary between gardeners.<br />

Garden plants provide many useful purposes, and in time they<br />

will become an integral part of your environment, chosen to suit<br />

the architecture of both your home and your personal lifestyle.<br />

Good garden cultivation is your contribution to establishing a<br />

special microclimate and will help to protect and preserve the local<br />

environment.<br />

In recent times, many new plant varieties have been introduced<br />

through modern production methods and the work of plant<br />

breeders, resulting in plants which are attractive and hardy but<br />

which are non-invasive. These may be plants which are sterile or<br />

rarely produce seed. Many new varieties have low water needs or<br />

are tolerant of the air pollution found in the urban environment. In<br />

this way the Nursery Industry is contributing to the elimination of<br />

damaging or invasive species.<br />

Purchasing plants from markets and other sources such as ‘car boot<br />

sales’, as well as plant swapping and trading between friends may<br />

also result in inadvertent movement of declared or noxious weeds.


Are you creating a weed problem in your area?<br />

Are your garden plants ‘jumping the fence’? Garden escapes<br />

are said to be one of the main sources of environmental weeds.<br />

Homeowners have a responsibility to protect natural resources.<br />

Here are some simple ways to enjoy gardening without creating<br />

problems outside the garden fence.<br />

Recognise and remove plants known to be ‘weedy’ and<br />

destroy them responsibly, according to local Natural Resource<br />

Management Board or council.<br />

Replace problem plants with non-invasive alternatives, as<br />

suggested by the ‘<strong>Grow</strong> <strong>Me</strong> <strong>Instead</strong>’ booklet or by your local<br />

nursery or garden centre. They will help identify any suspect<br />

invasive plants.<br />

When purchasing new plants for the garden read labels to<br />

establish good characteristics such as drought tolerance and<br />

non-weedy habit.<br />

Good gardening practices include removal of spent owers that<br />

can set seed within your garden or spread to bushland.<br />

Do not dump green garden waste in neighbouring or public<br />

space as many plants can regenerate to become a nuisance.<br />

Do not dump spent cut owers into the garden or on to<br />

adjoining property. Florists often use seed heads, vines and other<br />

plant parts that may establish in your garden.<br />

Never tip the water or plants from your aquarium into ponds,<br />

rivers or waterways. There are numerous, serious aquatic plants<br />

threatening rivers and waterways because of the thoughtless<br />

actions of some people.<br />

There are many good sources of information in regard to weeds<br />

and their control. See the back cover for a list.<br />

Think global – act local. Consider plants local to your area. Your<br />

local council or shire will be able to provide a list of indigenous<br />

plants for your garden.<br />

Encourage friends and neighbours to become involved as<br />

custodians of their environment by following the same<br />

guidelines.<br />

11


Native plants or imported species?<br />

One of the most commonly asked questions at nurseries and garden<br />

centres is whether one should use native or exotic plants in the<br />

garden. There has long been discussion about this in gardening<br />

circles, and more recently the topic of using only locally indigenous<br />

or local area natives has become topical. The primary concern of<br />

most horticulturists is that gardeners should know the difference so<br />

that they may make informed choices.<br />

Natives are, as the name suggests, those plants that occur naturally<br />

within Australia. Quite properly, they should be referred to as<br />

Australian native plants. Grevilleas, Eucalypts and Acacias are all<br />

examples. Of course, Australia is a big continent, so what is native to<br />

one area or region, may be very different to those found in another.<br />

Think for example, of native plants from the dry soils of Western<br />

Australia and compare them to the tropical rainforest plants native<br />

to <strong>Queensland</strong> – all Australian natives – but very different plants,<br />

with different growing requirements.<br />

In recent years, plant breeders have hybridised many or been able to<br />

choose better or ‘select’ forms that have been sourced from plants<br />

growing naturally in the wild. Both hybrids and select forms will<br />

have improved characteristics to the parent species. It may be they<br />

ower more often or earlier in the season, they may produce better<br />

fruit, be disease resistant or they may have a longer life span.<br />

Imported or so called ‘exotic’ plants are those originating elsewhere,<br />

not necessarily the ‘exotic tropics’ as some people may think.<br />

Indigenous plants are plants that grow naturally in your local area.<br />

They are naturally occurring plants of the region and can be seen in<br />

local parklands, as remnant plants on roadsides or riverbanks and<br />

in local bushland.<br />

Some Australian native plants become ‘naturalised’ or take over in<br />

an area where they would not normally occur such as Cootamundra<br />

Wattle (Acacia baileyana), Bluebell Creeper (Billardiera heterophylla)<br />

and Sweet Pittosporum (Pittosporum undulatum ).<br />

Of concern to some conservationists and indigenous plant<br />

enthusiasts is the possibility that some introductions may interbreed<br />

with local or indigenous plants, thus impacting on the local gene<br />

pool.<br />

Most invasive plants are imported or introduced plants. One needs<br />

to be informed about these plant species which are the basis of the<br />

‘<strong>Grow</strong> <strong>Me</strong> <strong>Instead</strong>’ program. However, it is fact that there are a far<br />

greater number of well behaved, imported garden plants that are<br />

not invasive.<br />

12


Working on the known statistic that 27,000 plants have been<br />

imported into Australia and some 2,700 of these are listed<br />

as environmental weeds, it is estimated that approximately<br />

10% of the imported plants in our gardens are invasive.<br />

In modern horticulture, plants are bred, developed or selected for<br />

desirable traits such as hardiness, drought tolerance, long owering<br />

season, larger owers or fruits, their disease resistance and general<br />

appeal.<br />

Of primary importance in selecting plant material for your garden is<br />

sourcing accurate information about the plant. We suggest that you<br />

ask for advice at your local nursery or garden centre.<br />

Consult your local council or Natural Resource Management Board<br />

if still in doubt!<br />

Australian native plants have greater appeal today than in the past;<br />

they generally grow better because of the improvements made in<br />

their selection.<br />

Indigenous species should be grown from seed sourced locally to be<br />

of best benefit in your locality.<br />

Australian gardens today have become an eclectic mix of both<br />

native and imported plants, and can be complimentary to one<br />

another. Choosing one or the other is not the question; ultimately it<br />

is the gardeners choice!<br />

Any plant should be acceptable to the Australian gardener so long<br />

as it is non-invasive and does not require copious amounts of water,<br />

fertilisers and other chemicals to survive.<br />

13


Using herbicides<br />

14<br />

8) Controlling weeds<br />

Many of the weed control techniques suggested on this and<br />

the following pages involve the use of herbicides. Herbicides are<br />

poisons, and should be handled with the greatest respect. They can<br />

be absorbed very easily through the skin, by breathing the vapours,<br />

and by ingestion (eating or drinking).<br />

By law, herbicides must be used strictly in accordance with the<br />

manufacturer’s label. They should be kept well out of the reach of<br />

children, preferably secured in a locked cabinet. They should always<br />

be stored in the original labelled container.<br />

USE OF HERBICIDE: SAFETY PRECAUTIONS<br />

Read the label before opening the container<br />

and follow the instructions.<br />

Wear protective clothing: long sleeves, long<br />

pants, sturdy shoes, gloves, eye protection.<br />

Always wear waterproof gloves. A respirator<br />

is advised when mixing or pouring the liquid.<br />

Do not eat, drink or smoke while using<br />

herbicide. Keep children and pets away.<br />

Wash skin and equipment afterwards. Wash<br />

contaminated clothing separately.<br />

Bushcare Of cers take<br />

fi<br />

no risks<br />

Clean up any spills with large amounts of water; shovel up<br />

contaminated soil, dispose of it at the tip.<br />

Types of herbicide<br />

There are two widely used herbicides licensed for use at home:<br />

Glyphosate, sold under various trade names, including Roundup®<br />

and Zero® (which have different concentrations), and Triclopyr, sold<br />

as Tree, Blackberry and Woody Weed Killer (etc.).<br />

How herbicides work<br />

Glyphosate is a systemic, non-selective herbicide. It inhibits the<br />

action of an enzyme, preventing the production of an amino acid<br />

essential to plant life and growth. It must be applied to green leaves,<br />

or directly to the plant’s sapwood, which lies under the bark.<br />

Triclopyr is a selective systemic herbicide for woody and broadleaf<br />

plants. It is a growth inhibitor which moves to the plant’s roots,<br />

stops growth, and eventually leads to the death of the plant.<br />

Triclopyr can be applied to green leaves and to bark.<br />

Herbicides, waterways and steep land<br />

Some of the chemicals which are added to herbicides are not safe<br />

to use near waterways. They have the potential to seriously affect<br />

the quality of aquatic ecosystems. If you need to remove weeds,<br />

particularly trees, within 20 m of any kind of watercourse, even a<br />

drain that runs only when it is raining, you should seek advice and<br />

assistance from your local council’s environmental management<br />

department or Natural Resource Management Board.


Control of woody weeds<br />

CUT AND PAINT<br />

Suitable for small to medium sized woody shrubs up to 10 cm in<br />

diameter (or larger if using a chain saw). See below for trees.<br />

Clear around the base of the plant. Clear ground and<br />

cut low: loppers<br />

Cut the stem horizontally as close & secateurs give<br />

to the ground as possible, using the cleanest cut.<br />

secateurs, loppers, or a saw. Make<br />

sure there is no soil on the cut.<br />

Apply herbicide to the cut stem<br />

immediately. Squeeze, not squirt if<br />

using an applicator.<br />

Apply the herbicide<br />

within seconds of<br />

Ensure there is no runoff of poison. cutting.<br />

Use as little herbicide as possible.<br />

TIPS<br />

Make cuts horizontal to prevent herbicide from running off the<br />

stump. Sharp angled cuts are hazardous.<br />

Apply herbicide immediately after cutting - within a few seconds,<br />

before plant cells close and translocation of herbicide ceases.<br />

If plants resprout, cut and paint the shoots after sufficient<br />

regrowth has occurred.<br />

Stem scraping can be very effective on certain woody weeds,<br />

e.g. Japanese Honeysuckle, Blackberry, vines and rhizomatous<br />

plants.<br />

STEM INJECTION<br />

A method for weedy trees and large shrubs<br />

Use a cordless drill (9 mm bit),<br />

hammer and chisel, or brace and bit.<br />

Below any branches, drill or chisel<br />

holes round the base of the tree, into<br />

the sapwood, angled down at 45°,<br />

and at 5 cm intervals.<br />

Make the holes about 40 mm deep.<br />

Within a few seconds of drilling each<br />

hole, fill<br />

it with herbicide.<br />

Use this method only when falling<br />

branches, as the tree dies, will not be<br />

a safety hazard.<br />

15<br />

VIRGINIA BEAR


HAND REMOVAL OF WEEDS<br />

Suitable for seedlings, herbaceous weeds, many grass species.<br />

Before starting work, remove and bag<br />

seeds and fruit, and place in bin.<br />

If the weed has a tap root, push a narrow<br />

trowel or long knife deep into the ground<br />

beside the root. Loosen the soil. Work<br />

round the root and then work the plant<br />

out gently.<br />

Many plants which will not regrow from<br />

their roots (e.g. many grasses) can be<br />

crowned: see diagram to the right. Hold<br />

leaves and stems together, and use a knife<br />

to cut through all the roots below the<br />

crowning<br />

‘crown’.<br />

Plants with bulbs, corms or tubers (e.g. Watsonia) may need<br />

deep digging to ensure complete removal. Bag bulbs, corms and<br />

tubers and send to the tip; do not compost.<br />

STEM & LEAF WIPING<br />

This method is suitable for plants with<br />

bulbs, tubers, corms or rhizomes, e.g.<br />

Watsonia.<br />

Remove and bag any seed or fruit.<br />

Using a weed wiper, start at the base<br />

and wipe all the stems and/or leaves<br />

with a dilute mix of herbicide.<br />

If leaves have soil on them, wipers<br />

must be regularly washed out.<br />

Take great care when wiping: do not allow the herbicide to touch<br />

your skin or to run off into the soil, or to get on a non-target plant.<br />

There are many control methods which are specific to certain weeds<br />

– e.g. large infestations where spraying, or covering to exclude light<br />

may be options. Contact your local nursery for up to date techniques.<br />

WHEN TO TREAT WITH HERBICIDE<br />

Apply herbicide when the plant is actively growing.<br />

Do not apply herbicide when the plant is under stress: extreme<br />

heat or cold, drought, waterlogging, or disease.<br />

Choose early morning or late afternoon in summer.<br />

Do not apply when wet or windy weather is anticipated.<br />

Treat deciduous plants in late spring or summer, when in full leaf.<br />

16<br />

leaf wiping


Control of ground covers, vines & scramblers<br />

SCRAPE AND PAINT<br />

This method is suitable for vines and scramblers with woody stems.<br />

Using a knife, and starting from the<br />

base, scrape 20 to 100 cm of leafy<br />

stem to expose the sapwood below<br />

the bark.<br />

Within seconds, apply herbicide to<br />

the scraped area.<br />

TIPS<br />

Do not ringbark the stem: scrape about one third of the diameter.<br />

Stems larger than 1 cm in diameter can be scraped on both sides.<br />

Vine curtains can be cut at chest level, then again at about 30<br />

cm. Scrape or cut and paint these stumps.<br />

Blackberry can be cut back to 1 m if there are plenty of leaves;<br />

then scrape and paint the cut stems.<br />

Pulling vines (especially twiners) out of trees and shrubs may do<br />

a lot of damage. They can be left hanging to die.<br />

By Law<br />

Herbicides must be used according to the label, or according to<br />

Australian Pesticides and Veterinary <strong>Me</strong>dicines Authority (APVMA)<br />

permits. If the plant on which you wish to use the herbicide is<br />

not named on the label, contact APVMA for permit information<br />

(www.apvma.gov.au).<br />

THE DIG OPTION<br />

scrape and paint<br />

On previous pages you will find advice on using herbicides to<br />

control weedy plants: often this causes minimal disturbance and<br />

less germination of seedlings.<br />

However, if you have the energy and want to minimise herbicide<br />

use, you can often take the dig option, making absolutely sure that<br />

you remove all the parts of the plant from which it can regrow.<br />

TIPS<br />

Seedlings and small plants may be pulled by hand when the soil<br />

is moist.<br />

Try to stagger weed removal. Large areas of exposed soil are an<br />

open invitation to weed invasion and erosion, carrying weed<br />

seed into the bush.<br />

Mulch bare soil, and stabilise it by planting bush-friendly plants<br />

into it as soon as possible.<br />

17


Trees & Shrubs<br />

Photo: Lorna Rose<br />

18<br />

Cootamundra Wattle<br />

Acacia baileyana<br />

HOW IT SPREADS<br />

It produce masses of seed pods that ripen on the tree and<br />

disperse with the help of birds, ants and small native<br />

mammals.<br />

These seeds have a high rate of germination especially after<br />

a bush fire.<br />

Photo: Lorna Rose<br />

Fringed Wattle<br />

Acacia fimbriata<br />

This very popular garden wattle<br />

with fine, silvery-grey feathery<br />

foliage and masses of soft balls of<br />

golden flowers is an Australian<br />

native plant now invasive outside<br />

its natural region.<br />

Seeds spread by ants and humans<br />

rapidly germinate. There is a high<br />

danger it will cross pollinate with<br />

the already endangered Downy<br />

Wattle (Acacia pubescens),<br />

putting it at further risk of<br />

extinction.<br />

Bushy 7m tree with fine, dark<br />

green leaves, bronze tips in<br />

spring and perfumed, pale<br />

lemon to golden flower balls.<br />

Suits a variety of soils with<br />

good drainage.


Photo: immij floramedia<br />

Zig Zag Wattle<br />

Acacia macradenia<br />

Snow In Summer<br />

<strong>Me</strong>laleuca linariifolia<br />

Other superior selections include;<br />

<strong>Me</strong>laleuca bracteata – Golden River Tea Tree<br />

'Revolution Gold'<br />

Eucalyptus torquata – Coral Gum<br />

This is a beautiful large<br />

pendulous shrub which grows<br />

to 6m in height.<br />

It has interesting branches that<br />

form a 'zigzag' pattern and hold<br />

large lanceolate phyllodes<br />

(modified stems that look like<br />

leaves).<br />

The plant is covered in masses<br />

of small yellow ball type flowers<br />

in late winter to spring. This<br />

Acacia is tolerant of dry<br />

conditions but frost tender.<br />

A medium growing Australian<br />

native tree often reaches 10m<br />

in height.<br />

Prefers a site with good moisture<br />

and makes a very effective screen.<br />

The highlight is when the plant<br />

comes into flower late spring to<br />

summer.<br />

It is covered in masses of white<br />

fluffy flowers in cylindrical spikes.<br />

This tree makes a truly spectacular<br />

addition to any garden.<br />

Ask your local retailer for more superior selections<br />

19


Photo: Christopher Gardiner<br />

20<br />

Indian Sirus<br />

Albizia lebbeck<br />

HOW IT SPREADS<br />

The seed is produced in large quantities and has a high rate<br />

of germination.<br />

The seed is dispersed by wind and water.<br />

Photo: Norwood<br />

Leichhardt Bean<br />

Cassia brewsteri<br />

Large spreading tree to 20m<br />

with bipinnate leaves and<br />

often a broad flat crown. In<br />

Spring the tree is covered with<br />

a spectacular cover of cream<br />

‘powder-puff’ flowers which<br />

are followed by elongated and<br />

flattened papery pods that can<br />

hang on the tree for several<br />

months.<br />

Spectacular Australian native<br />

tree growing to a height of 10m.<br />

Flowers are yellow and<br />

red and pea shaped.<br />

They occur in profuse pendant<br />

heads and cover the tree making<br />

it difficult to see the foliage.


Photo: immij floramedia<br />

Photo: Ann McHugh<br />

Leopard Tree<br />

Caesalpinia ferrea<br />

White Bauhinia<br />

Lysiphyllum hookeri<br />

Other superior selections include;<br />

This is a beautiful tree growing<br />

to 12m in height. It has elegant<br />

limbs with dappled cream and<br />

grey bark forming an erect multistemmed<br />

trunk. The foliage is<br />

graceful and fern like, forming<br />

an umbrella shaped crown. It<br />

has yellow flowers borne on<br />

short erect spikes in late summer<br />

to autumn. Whilst sometimes<br />

considered evergreen, it can lose<br />

much of its foliage during<br />

winter.<br />

<strong>Me</strong>dium shrub to small<br />

growing tree, variable in<br />

height growing 5-8m. It has<br />

lobed Bauhinia type silvery<br />

grey leaves resembling<br />

butterflies. It loses most of<br />

the foliage just before<br />

beautiful white orchid like<br />

flowers appear in spring to<br />

summer.<br />

Albizia julibrissin 'Rosea' – Silk Tree<br />

Hibiscus tiliaceus Syn. Taliparti tiliaceum – Cotton Tree<br />

Ask your local retailer for more superior selections<br />

21


Photo: Sheldon Navie<br />

22<br />

Garden Asparagus<br />

Asparagus officinalis<br />

HOW IT SPREADS<br />

The plant quickly moves beyond being an edible vegetable<br />

and becomes a thick rambling mass of foliage that can<br />

produce plentiful berries similar to other invasive Asparagus<br />

species.<br />

Plants must have this foliage removed prior to the berries<br />

becoming ripe; otherwise it is recommended that the plant be<br />

removed altogether.<br />

Photo: immij floramedia<br />

A frost hardy perennial grown<br />

in many vegetable gardens. If<br />

the emerging edible spear is<br />

left unharvested it can expand<br />

into a multi-branched dense<br />

shrub eventually bearing<br />

berries which germinate<br />

readily. Responsible cultivation<br />

of this plant is necessary to<br />

avoid it becoming an invasive<br />

threat. If the plant cannot be<br />

harvested regularly it should<br />

be removed.<br />

Rough Maidenhair Fern<br />

Adiantum hispidulum<br />

Glossy green fan shaped fronds<br />

emerge from dark brown stems<br />

to 30cm high forming a tuft.<br />

New foliage is pink.<br />

This fern prefers a moist<br />

situation and protection from<br />

full sun for best results.


Photo: Norwood Industries<br />

Photo: immij floramedia<br />

Curry Plant<br />

Helichrysum angustifolium Syn.<br />

Helichrysum litoreum<br />

Rhubarb<br />

Rheum rhabarbarum<br />

Other superior selections include;<br />

Rungia klossii – Mushroom Plant<br />

Petroselinum crispum – Curly Parsley<br />

Attractive silver foliaged<br />

perennial forming a neat clump<br />

to 60cm.<br />

This small shrub has downy silver<br />

grey leaves that have a distinct<br />

curry-like aroma.<br />

This plant makes a fantastic<br />

addition to the garden with its<br />

vivid contrasting foliage.<br />

The tender new leaves have been<br />

used to flavour a range of foods<br />

including salads.<br />

This is a lush herbaceous<br />

perennial plant growing from<br />

short, thick rhizomes.<br />

They have large triangularshaped<br />

leaves with long fleshy<br />

reddish petioles.<br />

The leaves are toxic however<br />

various parts of the plant have a<br />

range of medicinal uses.<br />

Fresh raw stalks have a strong<br />

tart taste; most commonly the<br />

plant's stalks are cooked and<br />

used in pies and other foods for<br />

their tart flavour.<br />

Ask your local retailer for more superior selections<br />

23


Photo: Sheldon Navie<br />

HOW IT SPREADS<br />

The seeds can be spread by water (and wind over short<br />

distances). The seedlings can germinate along edges of<br />

gardens and even cracks in concrete.<br />

The plant can also be spread through the dumping of garden<br />

waste.<br />

Photo: immij floramedia<br />

24<br />

Pink Periwinkle<br />

Catharanthus roseus<br />

Shrubby perennial growing to<br />

60cm with dark green smooth<br />

edged foliage.<br />

Masses of rose pink flowers with<br />

dark red centre cover the plant<br />

throughout the warmer months.<br />

The plant produces an<br />

abundance of seeds which<br />

germinate readily.<br />

Can tolerate a wide range of<br />

growing conditions.<br />

Cut Leaf Daisy<br />

Brachyscome multifida and cultivars<br />

These delightful Australian<br />

perennials come in a range of<br />

colours such as yellow, pink,<br />

mauve, pale and deep blue and<br />

appear from late winter to<br />

autumn.<br />

With their delicate flowers and<br />

soft feathery foliage, cut leaf<br />

daisies are surprisingly hardy and<br />

are an excellent feature in a<br />

water-wise garden.<br />

They thrive in full-sun and will<br />

tolerate frost.


Photo: immij floramedia<br />

Photo: immij floramedia<br />

Native Sarsaparillas<br />

Hardenbegia violacea cultivars<br />

Candytuft<br />

Iberis 'Fairy Dwarf Mixed'<br />

Other superior selections include;<br />

Lampranthus species – Pigface<br />

Austromyrtus dulcis – Midyim<br />

A popular and generally<br />

hardy groundcover plant.<br />

Violet-Lilac pea shaped<br />

flowers cover the plant in<br />

winter and spring.<br />

Many new cultivars have<br />

been developed with white<br />

and pink flowers as well as<br />

different growth habits,<br />

some forming neat, rounded,<br />

low growing bushes.<br />

An extremely showy plant<br />

which forms a neat clump<br />

20cm to 30cm.<br />

Mid-green foliage is hardly<br />

noticeable under a mass of<br />

either white, pink or red<br />

flowers in clusters.<br />

The flowers appear in<br />

spectacular abundance during<br />

spring.<br />

Ask your local retailer for more superior selections<br />

25


Photo: Norwood Industries<br />

HOW IT SPREADS<br />

Photo: immij floramedia<br />

26<br />

Coreopsis<br />

Coreopsis lanceolata<br />

This attractive perennial forms<br />

tufts of leafy stems to 60cm in<br />

height.<br />

It is extremely floriferous and is<br />

covered in golden yellow daisy<br />

like flowers in spring and<br />

summer.<br />

It produces masses of freely<br />

germinating seeds and is an<br />

environmental weed even in<br />

areas with poor quality soil.<br />

The plant produces an abundance of seed which freely<br />

germinates ensuring this short lived plant can maintain a<br />

weedy population, often from an initial single escaped plant.<br />

This plant should not be grown in areas where it can escape<br />

the garden and establish in nearby natural areas.<br />

Ensure effective disposal of garden waste.<br />

Golden Everlasting Daisy<br />

Xerochrysum bracteatum<br />

This Australian annual or shortlived<br />

perennial, varies in habit from<br />

prostrate to a shrubby plant of<br />

about 1 m in height.<br />

The leaves are grey-green in colour<br />

and the deep golden flower heads<br />

are borne from spring through to<br />

late winter.<br />

The individual flowers are formed<br />

into a large cluster surrounded by<br />

large papery bracts.<br />

The Golden Everlasting Daisy has<br />

been cultivated for many years and<br />

a number of improved forms have<br />

been selected for cultivation.


Photo: Lorna Rose<br />

Photo: immij floramedia<br />

Day Lilies<br />

Hemerocallis species and hybrids<br />

Perennial Statice<br />

Limonium perezii<br />

Other superior selections include;<br />

Rudbeckia gloriosa Syn. – Marmalade Daisy<br />

Rudbeckia fulgida var. speciosa<br />

Echinacea purpurea – Echinacea<br />

Showy strap leaved perennial<br />

forming dense clumps, with the<br />

most dazzling array of flower<br />

colours.<br />

Whilst flowers are short lived<br />

their prolific production ensures<br />

a constant cover of cream,<br />

yellow, pink, orange, red and<br />

even burgundy blooms.<br />

There are many new cultivars to<br />

choose from, bearing single or<br />

double flowers.<br />

An attractive perennial shrub<br />

that forms a clump to 60cm.<br />

The leaves are glossy and the<br />

plant produces leafless flower<br />

stalks to 60cm in late spring<br />

and summer.<br />

The flowers are small and white<br />

and surrounded by the mauve<br />

to purple calyces that the plant<br />

is known for.<br />

The stems are often used for<br />

cut flowers as the purple<br />

calyces last a considerable time.<br />

Ask your local retailer for more superior selections<br />

27


Photo: Sheldon Navie<br />

HOW IT SPREADS<br />

A profusion of seeds are spread by wind from rounded woody<br />

capsules.<br />

The large number of ornamental plantings has created a large<br />

‘seed bank’ that enables this plant to invade natural bushland.<br />

Seeds and gum are spread by native bees.<br />

Photo: Norwood Industries<br />

30<br />

Cadaghi<br />

Corymbia torelliana<br />

(formerly Eucalyptus torelliana)<br />

Crow's Ash<br />

Flindersia australis<br />

This Australian native from the<br />

rainforest fringes of far north<br />

<strong>Queensland</strong> has become<br />

invasive outside its original<br />

range.<br />

<strong>Grow</strong>ing to a height of 30m it<br />

has rounded foliage and a<br />

smooth green trunk with grey<br />

scaly bark at the base.<br />

Flowers in masses of scented<br />

cream balls held in terminal<br />

clusters.<br />

This large evergreen Australian<br />

native tree grows 10 to 20m,<br />

depending on soil type.<br />

It has a sturdy trunk with scaly<br />

brown bark and a dense multibranched<br />

crown.<br />

It has shiny dark green pinnate<br />

leaves.<br />

The tree is covered in small white<br />

flowers in spring followed by<br />

interesting 5 segmented seed<br />

pods to 10cm.


Photo: immij floramedia<br />

Photo: immij floramedia<br />

Brush Box<br />

Lophostemon confertus<br />

Red Ironbark<br />

Eucalyptus sideroxylon 'Rosea'<br />

Other superior selections include;<br />

Tall tree that can reach 35m<br />

but is usually less in cultivation.<br />

It has shiny mid green foliage<br />

that provides a thick canopy.<br />

The trunk has smooth pinkish<br />

tan bark which peels to reveal<br />

greenish cream new bark.<br />

It is fast growing and makes an<br />

excellent shade or specimen<br />

tree.<br />

This is a stunning red flowering<br />

gum tree growing to 20 m<br />

high by 15 m wide.<br />

The bark of this tree contrasts<br />

well with the foliage which is<br />

dark green to grey-blue.<br />

It will grow successfully on<br />

many sites, including alkaline<br />

soils.<br />

For best growth, a well-drained<br />

site in full-sun is required.<br />

Corymbia citriodora – Lemon Scented Gum<br />

Sapium sebiferum Syn . – Chinese Tallow Tree<br />

Triadica sebifera<br />

Ask your local retailer for more superior selections<br />

31


Photo: Norwood Industries<br />

HOW IT SPREADS<br />

Photo: immij floramedia<br />

32<br />

Cosmos<br />

Cosmos bipinnatus<br />

This feathery leaved annual<br />

can reach 1.5m in height but<br />

is more often seen 'en masse'<br />

600-900mm high.<br />

It bears an abundance of daisy<br />

like blooms in spring with spot<br />

flowering at other times.<br />

Colours include shades of<br />

pink, purple, red and white.<br />

It seeds freely and can quickly<br />

establish stands in natural<br />

areas.<br />

As this plant is 'free seeding' it only takes a single plant to<br />

establish a broad colony on roadsides and other natural<br />

areas.<br />

The plant can also regenerate from a small piece of stem, so<br />

effective disposal of garden waste is important.<br />

Golden Everlasting Daisy<br />

Xerochrysum bracteatum<br />

This Australian annual or shortlived<br />

perennial, varies in habit from<br />

prostrate to a shrubby plant of<br />

about 1 m in height.<br />

The leaves are grey-green in colour<br />

and the deep golden flower heads<br />

are borne from spring through to<br />

late winter.<br />

The individual flowers are formed<br />

into a large cluster surrounded by<br />

large papery bracts.<br />

The Golden Everlasting Daisy has<br />

been cultivated for many years and<br />

a number of improved forms have<br />

been selected for cultivation.


Photo: Lorna Rose<br />

Photo: immij floramedia<br />

Day Lilies<br />

Hemerocallis species<br />

Showy strap leaved perennial<br />

forming dense clumps, with the<br />

most dazzling array of flower<br />

colours.<br />

Whilst flowers are short lived<br />

their prolific production ensures<br />

a constant cover of cream,<br />

yellow, pink, orange, red and<br />

even burgundy blooms.<br />

There are many new cultivars to<br />

choose from, bearing single or<br />

double flowers.<br />

Japanese Windflower<br />

Anemone hupehensis<br />

Other superior selections include;<br />

Centaurea cyanus – Cornflower<br />

Antirrhinum majus<br />

– Snapdragon<br />

A low growing perennial with<br />

tufts of mid green basal foliage<br />

divided in palmate fashion.<br />

The showy flowers rise above<br />

the foliage in autumn and<br />

appear in shades of mauve,<br />

white and pink.<br />

There are many new hybrids,<br />

seek sound horticultural<br />

knowledge on the most<br />

suitable local performers.<br />

Ask your local retailer for more superior selections<br />

33


Photo: Norwood<br />

34<br />

Mountain Ash<br />

Snow In Summer<br />

<strong>Me</strong>laleuca linariifolia<br />

A once popular evergreen<br />

garden or street tree growing<br />

to a height of 8m.<br />

The leaves are glossy green and<br />

the bark is light grey in colour.<br />

The tree produces abundant<br />

creamy white flowers followed<br />

by masses of winged seeds<br />

that germinate readily.<br />

HOW IT SPREADS<br />

The abundant seeds are spread by wind and water.<br />

These seeds have a high rate of germination and the tree<br />

quickly colonises native bushland<br />

Photo: Norwood<br />

Fraxinus griffithii<br />

A medium growing Australian<br />

native tree often reaches 10m in<br />

height.<br />

Prefers a site with good moisture<br />

and makes a very effective screen.<br />

The highlight is when the plant<br />

comes into flower late spring to<br />

summer.<br />

It is covered in masses of white<br />

fluffy flowers in cylindrical spikes.<br />

This tree makes a truly spectacular<br />

addition to any garden.


Photo: immij floramedia<br />

Photo: Norwood Industries<br />

Blueberry Ash<br />

Elaeocarpus reticulatus<br />

Crow's Ash<br />

Flindersia australis<br />

Other superior selections include;<br />

Harpullia pendula – Tulipwood<br />

Buckinghamia celsissima – Ivory Curl Flower<br />

Large shrub to small tree with<br />

dark green foliage forming a<br />

thick screen.<br />

The tree is covered with dainty<br />

pinkish-white flowers in<br />

spring-summer and these are<br />

followed by bluish black berries.<br />

‘Prima Donna’ has a more<br />

compact habit and has pink<br />

flowers.<br />

This large evergreen Australian<br />

native tree grows 10 to 20m,<br />

depending on soil type.<br />

It has a sturdy trunk with scaly<br />

brown bark and a dense<br />

multi-branched crown. It has<br />

shiny dark green pinnate leaves.<br />

The tree is covered in small<br />

white flowers in spring followed<br />

by interesting 5 segmented<br />

seed pods to 10cm.<br />

Ask your local retailer for more superior selections<br />

35


Photo: Sheldon Navie<br />

HOW THEY SPREAD<br />

Seed is both abundant and easily dispersed, either by wind<br />

or water.<br />

These seeds have a high rate of germination enabling fast<br />

establishment of colonies in natural bushland.<br />

Photo: Norwood<br />

36<br />

Golden Rain Trees<br />

Koelreuteria elegans subsp. formosana<br />

Koelreuteria paniculata<br />

Leichhardt Bean<br />

Cassia brewsteri<br />

These fast growing trees have<br />

mid-green ferny compound<br />

foliage. The trunk is grey and<br />

clean. In late Summer the tree<br />

is covered in panicles of clear<br />

yellow flowers. The flowers<br />

sometimes go un-noticed, but<br />

not the pink, papery<br />

bladderlike pods that form<br />

afterwards. Seed is produced<br />

in abundance with many new<br />

plants emerging adjacent to<br />

the original each season.<br />

Spectacular Australian native<br />

tree growing to a height of 10m.<br />

Flowers are yellow and red and<br />

pea shaped.<br />

They occur in profuse pendant<br />

heads and cover the tree making<br />

it difficult to see the foliage.


Photo: Philip Cameron<br />

Photo: Brian Sams<br />

Tulipwood<br />

Harpullia pendula<br />

This beautiful medium sized<br />

spreading tree can reach a<br />

height of 10-12m in cultivation.<br />

It has glossy pinnate leaves and<br />

forms an excellent street or<br />

shade tree.<br />

The flowers are yellowish cream<br />

and appear in summer followed<br />

by showy yellow to red<br />

two-lobed fruits up to 4cm<br />

across.<br />

Desert Ash<br />

Fraxinus angustifolia subsp. oxycarpa<br />

Other superior selections include;<br />

Large tree growing to a<br />

height of 10 – 12m, it has<br />

green leaves in thick whorls<br />

and dark grey brown bark.<br />

The flowers are small and<br />

creamy white in colour.<br />

The flowers are followed by<br />

single seeded winged fruits.<br />

This tree is deciduous but is<br />

able to withstand dry and<br />

somewhat arid conditions.<br />

Peltophorum pterocarpum – Yellow Flame Tree<br />

Magnolia grandiflora – Bullbay Magnolia<br />

Ask your local retailer for more superior selections<br />

37


Photo: Sheldon Navie<br />

HOW IT SPREADS<br />

The orange-red berries are highly desirable to birds whose<br />

droppings ensure this plant is widespread in bushland.<br />

Large colonies and thickets are created smothering natural<br />

vegetation and affecting ecosystems.<br />

Do not purchase Murraya from non-reputable suppliers as<br />

they are likely to be seedling grown forms.<br />

Photo: Macbird Floraprint<br />

38<br />

Mock Orange<br />

Murraya paniculata (seedling grown form)<br />

This compact rounded shrub<br />

with glossy green foliage grows<br />

to a height of 3-5m. The plant<br />

produces highly perfumed white<br />

flowers in terminal clusters in<br />

Spring, through to Autumn. The<br />

flowers are followed by small<br />

oval bright orange red berries<br />

which are highly attractive to<br />

birds.<br />

This very popular garden plant<br />

has several forms. The seedling<br />

grown form, popular in the<br />

1970’s, is to be avoided as it is<br />

invasive. Gardens in older<br />

suburbs are likely to have this<br />

undesirable form and removal is<br />

recommended<br />

Mock Orange<br />

Murraya paniculata (cutting grown form)<br />

Professional nursery growers<br />

and retailers now promote the<br />

use of a superior cutting grown<br />

selection which produces few or<br />

no berries.<br />

The growth habit is more<br />

naturally compact than the<br />

inferior and invasive seedling<br />

form.<br />

Ask your professional<br />

retailer for this cutting grown<br />

cultivar.


Photo: Macbird Floraprint<br />

Photo: immij floramedia<br />

Lilly Pillies<br />

Syzygium australe cultivars<br />

Lemon Scented Myrtle<br />

Backhousia citriodora<br />

Other superior selections include;<br />

Camellia sasanqua – Sasanqua Camellia<br />

Xylosma senticosa – Dense Logwood<br />

This superb Australian native<br />

rainforest plant has glossy green<br />

foliage, a profusion of fluffy<br />

white flowers and small<br />

colourful berries.<br />

There are many different<br />

cultivars of this plant with a<br />

wide range of growth habits,<br />

foliage types and berry colours.<br />

Many make highly desirable<br />

hedges and screens. ‘Elite’,<br />

‘Bush Christmas’ and<br />

‘Hinterland Gold’ are three of<br />

many suitable selections.<br />

<strong>Me</strong>dium sized tree to 12m with<br />

grey green foliage to 10cm in<br />

length.<br />

A key feature is that leaves are<br />

strongly lemon scented when<br />

crushed.<br />

A profusion of white-cream<br />

flowers appear in summer.<br />

An underused Australian native<br />

rainforest tree.<br />

Ask your local retailer for more superior selections<br />

39


Photo: Bamboo Downunder<br />

HOW THEY SPREAD<br />

Both of these ‘running bamboos’ send their invasive rhizomes<br />

considerable distances from the original plant.<br />

They are incredibly difficult to control and are a serious<br />

invasive threat.<br />

Photo: Barry Naylor<br />

38<br />

Golden Bamboo<br />

Phyllostachys aurea<br />

Black Bamboo<br />

Phyllostachys nigra<br />

<strong>Grow</strong>ing to a height of 6m,<br />

with long slender canes and<br />

dense graceful foliage.<br />

These types of bamboo have<br />

a spreading habit and send<br />

their rhizomes (roots)<br />

underground, often<br />

sprouting some distance<br />

from the original plant.<br />

Slender Weavers Bamboo<br />

Bambusa textilis var. gracilis<br />

<strong>Grow</strong>ing to a height of 6m this<br />

upright clumping bamboo has<br />

small leaves and an erect nature.<br />

Individual canes can get to<br />

25mm in diameter; it is suitable<br />

for containers and will also<br />

tolerate wet soils.<br />

A truly graceful clumping<br />

bamboo.


Photo: Barry Naylor<br />

Photo: Norwood Industries<br />

Tiger Grass<br />

Thysanolaena latifolia Syn.<br />

Thysanolaena maxima<br />

Japanese Bamboo<br />

Nandina 'Gulf Stream'<br />

Other superior selections include;<br />

Bambusa lako – Timor Black Bamboo<br />

Bambusa chungii – Chungi Bamboo<br />

Fantastic clumping perennial<br />

grass that forms an impenetrable<br />

screen.<br />

<strong>Grow</strong>ing to a height of 3.5m<br />

with arching stems and narrow<br />

leaves this is an excellent<br />

substitute for running bamboo<br />

as it is a clump forming plant.<br />

This is a very hardy bamboo like<br />

plant that grows approximately<br />

1.2 m in height.<br />

It has several branches growing<br />

from the base with colourful<br />

green and red tinged foliage<br />

throughout most of the year,<br />

which turns bright red during<br />

the coldest months.<br />

It has small white flowers<br />

followed by reddish berries.<br />

This is a compact grower and is<br />

quite hardy once established.<br />

Ask your local retailer for more superior selections<br />

39


HOW IT SPREADS<br />

Photo: immij floramedia<br />

40<br />

Lombardy Poplar<br />

Populus nigra 'Italica'<br />

Manna Gum<br />

Eucalyptus viminalis<br />

This is an upright form of<br />

Populus nigra growing to 25m<br />

in height.<br />

It has triangular shaped dark<br />

green leaves which turn a<br />

brilliant yellow in late autumn.<br />

Poplars have separate male and<br />

female trees and the ones first<br />

introduced to the ACT were<br />

male.<br />

They do not produce seed but reproduce by suckers which<br />

can form dense copses.<br />

Lombardy poplar has been widely planted as an ornamental<br />

tree in moist sites and beside streams in the ACT.<br />

It is a non-native naturalised species in the Australian flora having<br />

a direct impact on rare and threatened species.<br />

Indigenous to Victoria, Qld, NSW,<br />

Tas and SA the Manna Gum is the<br />

primary food tree for Koalas.<br />

Tolerant of most situations with<br />

the tallest trees found in<br />

mountain regions.<br />

Bark is shed in ribbons during<br />

summer leaving the upper trunk<br />

and branches white but the base<br />

of the tree remains bark-coated<br />

The leaves are dark green and<br />

often sickle-shaped.<br />

Flowers are cream coloured in a<br />

cluster.


Photo: Jackie Miles<br />

Photo: Fleming's Nurseries<br />

Ornamental Pear<br />

Pyrus 'Glens Form'<br />

Flowering Plum<br />

Prunus cerasifera 'Oakville Crimson Spire'<br />

Other superior selections include;<br />

Betula nigra – River Birch<br />

This is a superb ornamental<br />

pear with dense green foliage<br />

that turns gold, plum and<br />

burgundy in autumn.<br />

<strong>Grow</strong>ing to a height of 11m,<br />

it is a popular specimen tree<br />

in parks and gardens.<br />

This species can tolerate quite<br />

dry conditions as well as<br />

intermittently wet, heavy soils.<br />

This stunning upright form of<br />

flowering plum grows in<br />

columnar form to a height of 6m.<br />

Foliage is rich reddish bronze<br />

when young becoming darker<br />

with age.<br />

In early spring a profusion of<br />

white flowers with red stamens<br />

emerge followed by new foliage.<br />

This selection makes a fantastic<br />

urban screening or street tree,<br />

particularly where lateral space is<br />

limited.<br />

Cupressus sempervirens 'Nitschkes Needle' – Pencil Pine<br />

Ask your local retailer for more superior selections<br />

41


Photo: Barry Naylor<br />

HOW IT SPREADS<br />

Photo: immij floramedia<br />

42<br />

Common Indian Hawthorn<br />

Rhaphiolepis indica<br />

Glossy Abelia<br />

Abelia grandiflora<br />

An evergreen native shrub<br />

from southern China<br />

growing 3-5m in height.<br />

It is extremely tough and has<br />

shiny, leathery leaves.<br />

White Spring flowers are<br />

profuse, held in terminal<br />

clusters and are mildly<br />

perfumed.<br />

An abundance of bluish<br />

black berries follow in<br />

Summer.<br />

The berries are highly desirable to birds and their distribution<br />

into bushland is widespread.<br />

The seeds can also be spread by water.<br />

Evergreen shrub with arching<br />

branches to 2 m high.<br />

Shiny, dark green glossy foliage<br />

with mauve-pink tubular flowers.<br />

Suitable as a screening or<br />

specimen plant, this hardy, water<br />

wise and non-invasive shrub<br />

thrives in full-sun to part-shade.<br />

Ask your local garden centre for<br />

this and other recommended<br />

cultivars.


Photo: Lorna Rose<br />

Photo: Norwood Industries<br />

Sasanqua Camellia<br />

Camellia sasanqua<br />

Other superior selections include;<br />

Rhaphiolepis indica 'Intermedia' – Indian Hawthorn<br />

Gardenia species – Gardenia<br />

This fantastic plant should be<br />

more widely used in the Sub-<br />

Tropics.<br />

There are many and varied<br />

flower colours, ranging from<br />

white through to pink and red.<br />

Most will tolerate full sun with<br />

growth habits to suit every<br />

situation.<br />

Many cultivars can be pruned<br />

into effective hedges.<br />

Dwarf Pittosporum<br />

Pittosporum tobira 'Miss Muffett'<br />

Delightful small rounded shrub<br />

growing to 1m in height.<br />

The oblong glossy green leaves<br />

appear in whorls around the<br />

stems, new flushes are lime<br />

green.<br />

Bearing small fragrant white star<br />

shaped flowers in late Spring<br />

this plant makes an effective low<br />

hedge or can be planted in<br />

clumps for mass appeal.<br />

Ask your local retailer for more superior selections<br />

43


Photo: immij<br />

floramedia<br />

Photo: immij<br />

floramedia<br />

44<br />

Golden-leaved Black Locust<br />

Robinia pseudoacacia ‘Frisia’ and other<br />

grafted varieties.<br />

This deciduous, spreading tree<br />

has dense, drooping clusters of<br />

fragrant, pea-like, white flowers<br />

appearing in spring.<br />

The trunk has rigid and<br />

furrowed bark, the luxuriant<br />

leaves are golden yellow when<br />

young and turn orange yellow<br />

in Autumn<br />

HOW IT SPREADS<br />

They are prone to suckering. This happens because the variety<br />

is grafted on to a vigorous understock, R. pseudoacacia, also<br />

known as the False Acacia. The False Acacia will grow to 20m<br />

(60’) and is native to the United States. It is a deciduous tree<br />

with green compound leaves and sharp thorns and it is now<br />

naturalised in many parts of Europe, Asia and Australia.<br />

If its roots are damaged (for example by a mower or whipper<br />

snipper or by digging) or if the roots hit an obstacle, such as a<br />

clay soil, they will produce suckers. This characteristic is<br />

retained when the tree is used as an understock.<br />

The hard-coated seed may also be spread longer distances in<br />

soil or water or occasionally by animals.<br />

Revolution Gold<br />

<strong>Me</strong>laleuca bracteata ‘Revolution Gold’<br />

This is a beautiful, golden-foliaged,<br />

Australian native shrub to 4 m by<br />

2 m wide.<br />

Its golden foliage provides year<br />

round colour in gardens.<br />

An ideal screening shrub or feature<br />

specimen.<br />

In spring the creamy-yellow brushes<br />

are bird attracting. It requires little<br />

attention and will grow in a wide<br />

range of soils and garden conditions.<br />

Prefers an open sunny position and<br />

regular pruning to maintain shape<br />

and to encourage new growth.


Photo: immij floramedia<br />

Photo: Norwood Industries<br />

Ginkgo<br />

Ginkgo biloba<br />

Other superior selections include;<br />

This is a truly spectacular and<br />

tall deciduous tree which can<br />

grow to a height of 20m.<br />

It has matt green fan-shaped<br />

leaves which resemble<br />

maidenhair foliage.<br />

The foliage turns golden<br />

yellow in autumn.<br />

It does bear a fleshy plum like<br />

fruit but requires both male<br />

and female plants near each<br />

other for pollination to occur.<br />

Chinese Tallow<br />

Sapium sebiferum Syn. Triadica sebifera<br />

This is a fast growing tree,<br />

variable in height from<br />

6m to 12m.<br />

It has bright green heart<br />

shaped leaves which turn<br />

shades of yellow, orange, red<br />

and purple during autumn.<br />

It is considered deciduous in<br />

local conditions but can retain<br />

some foliage in warmer sites.<br />

It has greenish yellow flowers<br />

borne on the branch tips in<br />

late spring, followed by fruits<br />

that are covered in white wax.<br />

Fraxinus excelsior 'Aurea' – Golden Ash<br />

Cupressocyparis leylandii 'Gold Rider’ – Gold Rider<br />

Ask your local retailer for more superior selections<br />

45


Photo: immij floramedia<br />

46<br />

Pepper Tree<br />

HOW IT SPREADS<br />

Seeds are highly delectable to birds and are dispersed by<br />

them. Seeds germinate freely and this tree has become a pest<br />

plant in many areas of Australia, along with the species form,<br />

S. molle.<br />

Photo: Norwood<br />

Schinus molle var. areira<br />

Snow In Summer<br />

<strong>Me</strong>laleuca linariifolia<br />

Spreading, evergreen tree<br />

originally from South America<br />

widely planted in the early years<br />

of settlement as a shade tree.<br />

Semi-weeping in habit, it has<br />

willow-like leaves and small<br />

yellow-white flowers in spring<br />

that are followed by clusters of<br />

pea-sized pinkish-red berries.<br />

These are 'bird candy'.<br />

A medium growing Australian<br />

native tree often reaches 10m<br />

in height.<br />

Prefers a site with good moisture<br />

and makes a very effective screen.<br />

The highlight is when the plant<br />

comes into flower late spring to<br />

summer.<br />

It is covered in masses of white<br />

fluffy flowers in cylindrical spikes.<br />

This tree makes a truly spectacular<br />

addition to any garden.


Photo: immij floramedia<br />

Photo: immij floramedia<br />

Leopard Tree<br />

Caesalpinia ferrea<br />

Manchurian Pear<br />

Pyrus ussuriensis<br />

Other superior selections include;<br />

Syncarpia glomulifera – Turpentine Tree<br />

Alphotinia excelsa – White Ash<br />

This is a beautiful tree growing<br />

to 12m in height. It has elegant<br />

limbs with dappled cream and<br />

grey bark forming an erect<br />

multi-stemmed trunk.<br />

The foliage is graceful and fern<br />

like, forming an umbrella<br />

shaped crown.<br />

It has yellow flowers borne on<br />

short erect spikes in late summer<br />

to autumn.<br />

Whilst sometimes considered<br />

evergreen, it can lose much of<br />

its foliage during winter.<br />

The largest growing of the Pear<br />

trees, this selection can reach<br />

to 20m in height.<br />

It has a broad pyramidal shape<br />

and makes an excellent street<br />

or specimen tree.<br />

The leaves are wide, shiny, dark<br />

green and almost heart<br />

shaped. In spring it is covered<br />

in a profusion<br />

of small white<br />

scented flowers followed by<br />

small yellow brown fruit.<br />

Ask your local retailer for more superior selections<br />

47


Photo: Sheldon Navie<br />

HOW IT SPREADS<br />

Photo: immij floramedia<br />

50<br />

Easter Cassia<br />

Senna pendula var. glabrata<br />

A showy evergreen scrambling<br />

shrub that can reach 3m in<br />

height.<br />

The compound leaves are mid<br />

green and rounded at the tip.<br />

The flowers are bright yellow<br />

and form a spectacular show as<br />

they completely cover the<br />

foliage in Autumn.<br />

Cylindrical green pods follow<br />

with abundance of seeds.<br />

Seeds are spread by birds, insects, water and gravity.<br />

The plentiful seed ensures that even those that fall close to<br />

the bush maintain the invasive population.<br />

Dwarf Fringed Wattle<br />

Acacia fimbriata 'Nana'<br />

A spectacular new cultivar of this<br />

local favourite.<br />

With dense fine foliage this plant<br />

can be used as an effective screen<br />

or equally well as a feature.<br />

It is covered in masses of yellow<br />

flowers in winter-spring but has<br />

all round appeal due to the<br />

attractive foliage and growth<br />

habit.


Photo: immij floramedia<br />

Photo: Sheldon Navie<br />

Honey Gem<br />

Grevillea 'Honey Gem'<br />

Dogwood<br />

Jacksonia scoparia<br />

Other superior selections include;<br />

Dodonaea triquetra – Native Hop Bush<br />

Eremophila maculata 'Aurea’ – Emu Bush<br />

This hardy Australian native is<br />

an all time favourite.<br />

It can grow above 4m in<br />

height but is more often seen<br />

as a 2-3m specimen.<br />

It has lovely ferny foliage and is<br />

covered in masses of orange<br />

brushes laden with nectar for<br />

most of the year.<br />

It is a fantastic addition to any<br />

garden and will attract a wide<br />

array of nectar feeding birdlife.<br />

<strong>Grow</strong>n for a combination of its<br />

interesting foliage and flowers.<br />

There are no visible leaves on<br />

the wiry angular branches that<br />

are often weeping.<br />

Yellow pea shaped flowers<br />

appear in the summer months<br />

making an eye catching display.<br />

Ask your local retailer for more superior selections<br />

51


Photo: Sheldon Navie<br />

52<br />

Racehorse Tree<br />

Tipuana tipu<br />

Yellow Flame Tree<br />

Peltophorum pterocarpum<br />

This large fast growing attractive<br />

tree grows to 20m with a similar<br />

spread.<br />

Dark green pinnate leaves attach<br />

to somewhat arching branches.<br />

Terminal clusters of yellow<br />

Cassia-like flowers appear in<br />

Spring. Winged seed pods follow<br />

holding several seeds in each.<br />

The tree is used widely as it<br />

provides excellent shade.<br />

HOW IT SPREADS<br />

Seeds are plentiful and are spread by water, wind and<br />

gravity.<br />

These seeds have a high rate of germination.<br />

Photo: immij floramedia<br />

Fast growing evergreen tree<br />

growing to 15m.<br />

It has deep green fern like<br />

foliage that has a bronze edge<br />

to the new growth.<br />

It is covered in terminal sprays<br />

of perfumed bright yellow<br />

flowers with crinkled petals that<br />

emerge from rust red buds.<br />

It is a very effective shade tree<br />

for the Sub-Tropics.


Photo: Lorna Rose<br />

Photo: immij floramedia<br />

Native Frangipani<br />

Hymenosporum flavum<br />

Leopard Tree<br />

Caesalpinia ferrea<br />

Other superior selections include;<br />

Syncarpia glomulifera – Turpentine Tree<br />

Albizia julibrissin 'Rosea' – Silk Tree<br />

Clusters of scented, creamy<br />

yellow flowers cover the tree in<br />

spring amid shiny, dark-green<br />

leaves.<br />

<strong>Grow</strong>ing 10-15m high in the<br />

garden. Reasonable frost<br />

tolerance.<br />

This is a beautiful tree growing<br />

to 12m in height.<br />

It has elegant limbs with dappled<br />

cream and grey bark forming an<br />

erect multi-stemmed trunk.<br />

The foliage is graceful and fern<br />

like, forming an umbrella shaped<br />

crown.<br />

It has yellow flowers borne on<br />

short erect spikes in late summer<br />

to autumn.<br />

Whilst sometimes considered<br />

evergreen, it can lose much of its<br />

foliage during winter.<br />

Ask your local retailer for more superior selections<br />

53


Climbing and Ground Cover Plants<br />

This very useful group of plants was often used to cover unsightly<br />

objects and provide green barriers. Unfortunately we now know that the<br />

attributes that make them useful can also provide them with a means to<br />

grow outside their given area and invade nearby bushland. There are<br />

many alternative less invasive plants available. Please consider from the<br />

list opposite or ask your local garden centre for other alternatives.<br />

Photo: Norwood Industries<br />

54<br />

Red Trumpet Vine<br />

Campsis radicans<br />

Bower of Beauty<br />

Pandorea jasminoides<br />

A vigorous climber grown for its<br />

spectacular orange red trumpet<br />

shaped flowers borne in late<br />

summer to autumn.<br />

This plant can grow up to 10m<br />

with the aid of support.<br />

This plant can be trained into a<br />

neat garden shrub but if left<br />

unchecked can cling to adjacent<br />

trees by way of small aerial<br />

rootlets; becoming a rampant<br />

pest.<br />

HOW IT SPREADS<br />

The plant has small aerial roots and clings to almost anything.<br />

Small pieces of the plant will easily root in the warmer<br />

months so appropriate disposal of garden waste is important.<br />

The plant must not be planted near environmentally sensitive<br />

areas as it will escape and invade adjacent natural systems.<br />

Photo: immij floramedia<br />

Vigorous climber to spreading<br />

shrub with dark green glossy<br />

pinnate leaves.<br />

Flowers are borne in terminal<br />

clusters in the warmer months<br />

and are pink with a dark<br />

carmine throat.<br />

There are several cultivars<br />

including ‘Lady Di’ that has<br />

cream flowers.


Photo: Lorna Rose<br />

Photo: immij floramedia<br />

Wonga Wonga Vine<br />

Pandorea pandorana<br />

Other superior selections include;<br />

Vitis vinifera – Ornamental Grape<br />

Gelsemium sempervirens – Carolina Jessamine<br />

Vigorous Australian native<br />

twining or scrambling plant.<br />

Flowers are tubular and<br />

creamy-white with purple or<br />

brownish markings and appear<br />

in spring and summer.<br />

Several new cultivars have been<br />

developed including<br />

‘Snowbells’ with pure white<br />

flowers and ‘Golden Showers’<br />

with yellow-bronze flowers.<br />

Orange Trumpet Vine<br />

Pyrostegia venusta<br />

A vigorous twining vine with<br />

mid-green foliage, it can reach<br />

up to 10m in length.<br />

Whilst the foliage makes an<br />

effective screen it is most often<br />

grown for its spectacular<br />

covering of clusters of bright<br />

orange, slender, trumpet<br />

shaped flowers.<br />

This is a truly magnificent<br />

winter flowering creeper.<br />

Ask your local retailer for more superior selections<br />

55


Photo: immij floramedia<br />

56<br />

Japanese Honeysuckle<br />

Lonicera japonica<br />

This scrambling or climbing<br />

shrub can grow up to 8m high.<br />

It has glossy dark green leaves<br />

and fragrant nectar filled white<br />

flowers that age to yellow.<br />

Summer flowers are followed<br />

by small shiny black berries in<br />

Autumn.<br />

HOW IT SPREADS<br />

The seeds are dispersed by water and birds. The stems take<br />

root where they touch the ground.<br />

The plant is also often dumped on roadside and bushland<br />

edges.<br />

Whilst a once common garden plant this Honeysuckle is now<br />

a seriously invasive plant in many moist native bushland<br />

areas.<br />

Photo: immij floramedia<br />

Banksia Rose<br />

Rosa banksiae 'Lutea'<br />

This climbing rose produces<br />

long slender twining canes with<br />

masses of tiny, double, white<br />

or yellow flowers in spring.<br />

It is one of the most popular<br />

climbing roses because of the<br />

beautiful spring blooms and<br />

absence of thorns.


Photo: immij floramedia<br />

Photo: Lorna Rose<br />

Bower of Beauty<br />

Pandorea jasminoides<br />

Wonga Wonga Vine<br />

Pandorea pandorana<br />

Other superior selections include;<br />

Hibbertia scandens – Snake Vine<br />

Vigorous climber to spreading<br />

shrub with dark green glossy<br />

pinnate leaves.<br />

Flowers are borne in terminal<br />

clusters in the warmer months<br />

and are pink with a dark<br />

carmine throat.<br />

There are several cultivars<br />

including ‘Lady Di’ that has<br />

cream flowers.<br />

Vigorous Australian native<br />

twining or scrambling plant.<br />

Flowers are tubular and<br />

creamy-white with purple or<br />

brownish markings and appear<br />

in spring and summer.<br />

Several new cultivars have been<br />

developed including<br />

‘Snowbells’ with pure white<br />

flowers and ‘Golden Showers’<br />

with yellow-bronze flowers.<br />

Hardenbergia violacea Hybrids – Native Sarsaparillas<br />

Ask your local retailer for more superior selections<br />

57


This vigorous prostrate ground<br />

cover plant forms a dense mat of<br />

foliage. It bears pink-lilac flowers<br />

throughout the year. It has been<br />

used as effective erosion control<br />

and even as a lawn substitute.<br />

There is conjecture regarding the<br />

natural range of these plants.<br />

Photo: immij floramedia<br />

P. nodiflora is considered native<br />

to tropical and sub-tropical Australia, yet some local authorities<br />

consider it a naturalised invader. For the purposes of <strong>Grow</strong> <strong>Me</strong><br />

<strong>Instead</strong> we would like gardeners to consider other non-invasive<br />

options. If gardeners need an effective groundcover there are many<br />

other non-invasive plants that you can choose.<br />

HOW IT SPREADS<br />

The plant reproduces easily from small pieces of stem<br />

Effective disposal of garden waste will reduce the spread of<br />

this plant<br />

Photo: immij floramedia<br />

56<br />

Lippia / Condamine Couch<br />

Phyla canescens and Phyla nodiflora<br />

Creeping Boobialla<br />

Myoporum parvifolium<br />

This evergreen, hardy Australian<br />

native forms a dense, weed<br />

suppressing ground cover that<br />

will easily cover one square<br />

metre.<br />

This species thrives if grown in<br />

freely-drained soil and full-sun.<br />

The flowers are white or pink and<br />

occur from winter to summer.<br />

Sweet fleshy fruits provide food<br />

for native birds.


Photo: Barry Naylor<br />

Photo: immij floramedia<br />

Carpet Star<br />

Zieria 'Carpet Star'<br />

Blue Saucer Flower<br />

Convolvulus sabatius<br />

Dampiera diversifolia – Dampiera<br />

This endangered Australian<br />

native groundcover forms a<br />

neat spreading mat to 75cm.<br />

It has dark green aromatic<br />

trifoliate foliage.<br />

In spring, prolific pink star<br />

shaped flowers are borne all<br />

over the plant making quite a<br />

contrast.<br />

Appreciates full sun and will<br />

tolerate winds and some frost.<br />

An attractive evergreen perennial<br />

with a spreading prostrate habit.<br />

Blue to violet funnel form flowers<br />

appear in late spring to autumn.<br />

This species is suitable as a<br />

ground cover or spill-over plant<br />

in rockeries and is also ideal for<br />

large containers or hanging<br />

baskets.<br />

Reaching a height of about<br />

20cm, it will spread to 2m wide.<br />

Prefers a moist well-drained site<br />

and is frost tolerant.<br />

Grevillea 'Mt. Tamboritha’ – Grevillea<br />

Ask your local retailer for more superior selections<br />

59


Photo: Lorna Rose<br />

HOW IT SPREADS<br />

Whilst the plant does produce seeds the major source of<br />

spread is through the dumping of garden waste.<br />

The plant also spreads by virtue of its vigorous vegetative<br />

habit.<br />

Photo: immij floramedia<br />

58<br />

Black-eyed Susan<br />

Thunbergia alata<br />

Bower of Beauty<br />

Pandorea jasminoides<br />

Vigorous herbaceous perennial<br />

climber that can reach 3-4m.<br />

Deep green triangular leaves to<br />

7cm form a thick cover.<br />

Flowers are borne in warmer<br />

months on single stalks, varying<br />

from fellow to bright orange,<br />

with a dark black throat.<br />

These are followed by small<br />

hairy seed capsule holding a<br />

few small seeds.<br />

Vigorous climber to spreading<br />

shrub with dark green glossy<br />

pinnate leaves.<br />

Flowers are borne in terminal<br />

clusters in the warmer months<br />

and are pink with a dark carmine<br />

throat.<br />

There are several cultivars<br />

including ‘Lady Di’ that has cream<br />

flowers.


Photo: Lorna Rose<br />

Photo: immij floramedia<br />

Snake Vine<br />

Hibbertia scandens<br />

Native Sarsaparillas<br />

Hardenbergia violacea cultivars<br />

Other superior selections include;<br />

Clematis aristata and C.microphylla – Native Clematis<br />

Gelsemium sempervirens – Carolina Jessamine<br />

Slender twining climber or<br />

trailing groundcover plant.<br />

It has dark green leaves and<br />

plentiful large buttercup yellow<br />

flowers in the warmer months.<br />

This plant is drought and frost<br />

resistant and tolerant of salt<br />

spray.<br />

A popular and generally hardy<br />

groundcover plant.<br />

Violet-Lilac pea shaped flowers<br />

cover the plant in winter and<br />

spring.<br />

Many new cultivars have been<br />

developed with white and pink<br />

flowers as well as different<br />

growth habits, some forming<br />

neat, rounded, low growing<br />

bushes.<br />

Ask your local retailer for more superior selections<br />

59


Berried Plants<br />

Gardeners often choose trees and shrubs with showy persistent<br />

berries for winter colour in their gardens when flowers are scarce.<br />

Unfortunately these berries often attract birds and small mammals<br />

that unwittingly aid the spread of these unwanted plants into<br />

bushland and open spaces.<br />

Silver-leaf Cotoneaster<br />

Cotoneaster pannosus<br />

This group of hardy, fast<br />

growing, perennial, woody<br />

shrubs will grow 2 to 5m tall.<br />

Some varieties are deciduous.<br />

They vary from medium to<br />

large shrubs.<br />

The flowers are small and<br />

white and appear in spring<br />

and summer.<br />

The flowers are followed by<br />

clusters of conspicuous<br />

orange to red berries that<br />

resemble minute apples.<br />

Cotoneasters were previously<br />

used as hedges and were<br />

commonly planted because the large crops of decorative<br />

berries hang on to the branches for months through winter<br />

and provided colour when flowers are scarce.<br />

Photo: Delwyn Thomas<br />

HOW IT SPREADS<br />

The seeds of this fruit are spread into bushland by fruit<br />

eating birds and will grow virtually anywhere a bird drops the<br />

seeds.<br />

Pyracantha and Cotoneaster species are often confused with each<br />

other. Cotoneaster species lack thorns<br />

Photo: immij floramedia<br />

60<br />

Lilly Pillies<br />

Syzygium australe cultivars<br />

This superb Australian native<br />

rainforest plant has glossy green<br />

foliage, a profusion of fluffy white<br />

flowers and small colourful berries.<br />

There are many different cultivars<br />

of this plant with a wide range of<br />

growth habits, foliage types and<br />

berry colours. Many make highly<br />

desirable hedges and screens.<br />

‘Elite’, ‘Bush Christmas’ and<br />

‘Hinterland Gold’ are three of<br />

many suitable selections.


Photo: Fleming’s Nurseries<br />

Photo: immij floramedia<br />

Flowering Crab Apples<br />

Malus species<br />

Grey Honey Myrtle<br />

<strong>Me</strong>laleuca incana<br />

This is a beautiful Australian<br />

native shrub growing to 3m in<br />

height. It has slender arching<br />

branches that hold hairy grey<br />

green leaves.<br />

It bears creamy yellow flower<br />

spikes in late spring to early<br />

summer and will tolerate a<br />

wide range of soil types.<br />

It can also be clipped into a<br />

neat hedge.<br />

Other superior selections include;<br />

Photinia species – Photinia<br />

Vitex trifolia 'Purpurea' – Purple Coastal Vitex<br />

Very pretty, highly ornamental<br />

and deciduous trees grown for<br />

beautiful Spring blossom and<br />

their showy crimson-red crab<br />

apples, the ripe fruit lasts well,<br />

adorning the tree from Autumn<br />

into early Winter.<br />

Visit www.flemings.com.au for<br />

excellent cultural information<br />

on the many old and new<br />

selected forms.<br />

Ask your local retailer for more superior selections<br />

61


Photo: immij floramedia<br />

Prickly Duranta<br />

Duranta erecta<br />

HOW IT SPREADS<br />

The berries are highly attractive to birds. If a plant is allowed<br />

to form berries, birds ingest them and distribute the plants<br />

widely in native bushland, creating thickets and upsetting the<br />

ecosystem.<br />

Do not allow existing plants to form berries. Either prune<br />

immediately after flowering or remove the plant entirely if<br />

regular maintenance is not practical.<br />

Note: This plant is also considered poisonous.<br />

Photo: Lorna Rose<br />

62<br />

Sasanqua Camellias<br />

Camellia sasanqua<br />

A dense shrub usually growing<br />

to 4-5m with pendulous<br />

branches bearing blue, white<br />

or purple flowers, followed by<br />

orange berries.<br />

This very popular garden<br />

plant has had a renaissance in<br />

popularity with the introduction<br />

of several new forms in recent<br />

years. Whilst many are kept well<br />

pruned into effective hedges,<br />

particularly in local government<br />

areas and commercial premises<br />

others are left unkempt and<br />

form berries.<br />

This fantastic plant should be<br />

more widely used in the Sub-<br />

Tropics.<br />

There are many and varied flower<br />

colours, ranging from white<br />

through to pink and red.<br />

Most will tolerate full sun with<br />

growth habits to suit every<br />

situation.<br />

Many cultivars can be pruned into<br />

effective hedges.


Photo: immij floramedia<br />

Photo: Norwood<br />

Grey Myrtle<br />

Backhousia myrtifolia<br />

Native Fuchsia<br />

Graptophyllum excelsum<br />

Other superior selections include;<br />

Backhousia citriodora – Lemon Scented Myrtle<br />

Syzygium australe cultivars – Lilly Pillies<br />

A highly desirable Australian<br />

native plant forming a thick<br />

screen to 2m when pruned<br />

but can reach 6-8m if left<br />

untouched.<br />

A profusion of cream white<br />

flowers bloom in summer and<br />

the greenish cream sepals<br />

persist for many months.<br />

An Australian native that can<br />

reach 6-8m but is often kept<br />

to 1.5m in cultivation.<br />

It has dark green glossy<br />

leaves and abundant rich red<br />

tubular flowers in summer.<br />

The flowers are attractive to<br />

nectar feeding birds.<br />

This fantastic plant should be<br />

more widely used, making<br />

an excellent specimen or<br />

effective hedge.<br />

Ask your local retailer for more superior selections<br />

63


HOW IT SPREADS<br />

Photo: immij floramedia<br />

64<br />

European and African Olives<br />

Olea europaea ssp. europaea<br />

and O.europaea subsp. cuspidata<br />

Water Gum<br />

Tristaniopsis laurina<br />

Hardy long-lived evergreen, small to<br />

medium trees. European olives<br />

produce green or black oval-shaped<br />

fruits for table and oil production.<br />

The fruits are considered a delicacy<br />

after they have been processed.<br />

African olives produced smaller<br />

spherical black fruits and has been<br />

used as a hedging species in the<br />

past.<br />

It must be stressed it is the fruit left<br />

on trees and not harvested that are<br />

spread by birds. The seedlings are<br />

extremely invasive and have become<br />

problematic in areas across the<br />

state.<br />

Trees left to grow wild, or that are not harvested.<br />

Fruit is attractive to and spread by birds and small mammals.<br />

How you can help.<br />

Don’t plant olive trees unless you are going to harvest the fruit, if<br />

you have trees you no can longer manage, ask permission from<br />

your local council to have the trees removed.<br />

This Australian native tree has<br />

various new improved forms, one<br />

highly recommended form is<br />

‘Luscious’, it grows 7 to 12m tall,<br />

the foliage is lush, dark green and<br />

shiny, with distinctive copper<br />

coloured new growth.<br />

Water Gums are highly desirable<br />

evergreen landscape trees with<br />

sweetly scented yellow flowers in<br />

short clusters through January.<br />

‘Luscious’ is a highly ornamental<br />

tree well suited for use in street tree<br />

plantings, parks, reserves, as a<br />

garden feature for that special spot,<br />

or as an elegant shade tree.


Photo: Norwood Industries<br />

Photo: Kate Steel<br />

Purple Pea Plant<br />

Hovea acutifolia<br />

Weeping Myall<br />

Acacia pendula<br />

Other superior selections include;<br />

Corymbia ficifolia – Red Flowering Eucalyptus<br />

This is an attractive Australian<br />

native shrub that reaches 1.5m<br />

in height. It has long leaves to<br />

8cm and is usually an open<br />

woody shrub up to 1m in<br />

width.<br />

It has masses of beautiful<br />

purple pea flowers in late<br />

winter through spring.<br />

It performs best with some<br />

protection from extreme heat<br />

and must have excellent<br />

drainage.<br />

Usually seen as an erect<br />

small tree growing to 10m in<br />

height, this Australian native<br />

should be more widely used.<br />

It has pendulous branches<br />

and narrow grey green<br />

phyllodes (modified stems<br />

that look like leaves).<br />

It bears yellow ball shaped<br />

flowers in late winter to<br />

spring.<br />

This tree will tolerate dry and<br />

arid conditions.<br />

Eucalyptus leucoxylon 'Euky Dwarf' – Euky Dwarf<br />

Ask your local retailer for more superior selections<br />

65


Photo: Delwyn Thomas<br />

HOW IT SPREADS<br />

Photo: immij floramedia<br />

66<br />

Firethorn<br />

Pyracantha species<br />

Dense Logwood<br />

Xylosma senticosa<br />

Evergreen shrubs to 4 m high.<br />

Flowers appear in white clusters<br />

in spring and summer, followed<br />

by spectacular and abundant<br />

fruit maturing to red, orange<br />

or yellow.<br />

These plants are spread by seed that is mostly bird or water<br />

dispersed.<br />

Pyracantha and Cotoneaster species are often confused with each<br />

other. Cotoneaster species are similar but lack thorns.<br />

Superb hedging plant that will<br />

reach a height of 4m if trimmed to<br />

form a small tree but thrives when<br />

trimmed to form a 1-1.5m hedge. It<br />

has orange and bronze tipped<br />

foliage and inconspicuous, fragrant<br />

yellow flowers.<br />

Xylosma will tolerate sun or shade.<br />

It is an exceptionally hardy plant,<br />

adapting to most soil conditions.


Photo: Fagg, M - ANBG<br />

Photo: immij floramedia<br />

NSW Christmas Bush<br />

Ceratopetalum gummiferum<br />

Lilly Pillies<br />

Syzygium australe cultivars<br />

Other superior selections include;<br />

Loropetalum chinense 'China Pink' – Fringe Flower<br />

<strong>Me</strong>laleuca 'Claret Tops' – Claret Tops<br />

A large shrub or small tree to 5m<br />

high in cultivation.<br />

The foliage is very attractive and the<br />

new growth is often pink or bronze<br />

coloured.<br />

The true flowers are white in colour.<br />

The main attraction is the massed<br />

display of red sepals n which are<br />

commonly mistaken to be flowers.<br />

These are at their peak in early<br />

to mid summer and usually at<br />

Christmas.<br />

The sepals and foliage are widely<br />

used for cut flowers.<br />

This superb Australian native<br />

rainforest plant has glossy green<br />

foliage, a profusion of fluffy<br />

white flowers and small<br />

colourful berries.<br />

There are many different<br />

cultivars of this plant with a<br />

wide range of growth habits,<br />

foliage types and berry colours.<br />

Many make highly desirable<br />

hedges and screens.<br />

‘Elite’, ‘Bush Christmas’ and<br />

‘Hinterland Gold’ are three of<br />

many suitable selections.<br />

Ask your local retailer for more superior selections<br />

67


Grasses<br />

Mainly chosen because of their various architecturally interesting<br />

forms and drought hardiness, yet many of them are considered<br />

invasive. Mislabelling with incorrect species names has been an<br />

occasional problem. To reduce further spread of invasive grasses,<br />

seek professional advice at your local garden centre, read all labels<br />

carefully and avoid purchasing from any other source. There are<br />

many native grasses commercially available from your local garden<br />

centre providing a safe alternative.<br />

Photo: André Karwath<br />

68<br />

Swamp Foxtail<br />

or Fountain Grass<br />

Pennisetum alopecuroides<br />

A perennial grass with narrow<br />

mid to dark green leaves<br />

forming a dense clump 60<br />

to 90cm in height.<br />

Attractive flower spikes appear<br />

above the foliage in the warmer<br />

months, showing yellow, green<br />

and the distinctive purple<br />

colours.<br />

This plants ‘Australian native’<br />

origin is questioned by many<br />

and the natural range of the<br />

plant has been confused by<br />

extensive use in urban<br />

landscape plantings in recent<br />

years.<br />

HOW IT SPREADS<br />

The seeds are not plentiful and viability is low however as<br />

there is conjecture regarding the distribution of this plant<br />

in Asia and Australia it is recommended we promote sterile<br />

hybrids or other well established native grasses


Photo: Barry Naylor<br />

Photo: immij floramedia<br />

Photo: immij floramedia<br />

Mat Rushes<br />

Lomandra longifolia and cultivars<br />

Kangaroo Grass<br />

Themeda australis<br />

Flax Lilies<br />

Dianella species<br />

Other superior selections include;<br />

Cymbopogon refractus – Barbed Wire Grass<br />

This widely used accent plant<br />

has thick arching green foliage<br />

that emerges from a central<br />

crown.<br />

Suitable near waters edge or<br />

boggy areas but able to tolerate<br />

dry conditions as well, this is a<br />

most versatile alternative.<br />

Many new cultivars are now<br />

available with a range of foliage<br />

colours and growth habits.<br />

An Australian native grass that<br />

has glaucous blue grey leaves and<br />

forms a dense mat like tuft.<br />

During warmer months the leaves<br />

turn maroon adding an<br />

interesting contrast.<br />

In summer, wiry flower spikes<br />

laden with seed often lay down<br />

on top of the foliage.<br />

This plant is effective as a weed<br />

suppressant or for erosion control.<br />

An excellent Australian native<br />

selection with mid-dark green<br />

arching foliage and sprays of<br />

blue flowers followed by bright<br />

blue berries.<br />

There has been a proliferation<br />

of Dianella cultivars with a wide<br />

range of foliage colours and<br />

growth habits in recent years.<br />

Ask your retailer for the most<br />

reliable local selections.<br />

Cymbopogon ambiguus – Native Lemon Grass<br />

Ask your local retailer for more superior selections<br />

69


Bulbous Plants<br />

There are a number of bulbous plants that have become invasive,<br />

largely through the dumping of garden waste. Some of these plants<br />

are behaving aggressively whilst others are adventitiously taking<br />

advantage of the growing conditions to naturalise.<br />

Many bulbous plants are becoming invasive in <strong>Queensland</strong>, with<br />

Glory Lily (Gloriosa superba) and Taiwan Lily (Lilium formosanum)<br />

amongst the worst. Seek sound advice before planting bulbs and<br />

similar plants. Whilst most have spectacular flowers consideration<br />

must be given to assessing their invasive potential.<br />

Photo: Lorna Rose<br />

70<br />

Taiwan Lily<br />

Lilium formosanum<br />

HOW IT SPREADS<br />

The plant seeds readily and these are scattered easily by the<br />

long willowy stems as they move on the breeze.<br />

Seeds germinate readily and bulb-lets also spread through soil<br />

movement and water.<br />

Photo: Norwood<br />

Spider Lily<br />

Hymenocallis littoralis<br />

<strong>Grow</strong>ing up to 1m in height<br />

this invasive bulbous plant has<br />

long slender stems covered with<br />

long narrow mid-green leaves.<br />

The trumpet shaped flowers<br />

are fragrant and appear in early<br />

Summer followed by seed pods<br />

holding many thousands of<br />

winged seeds.<br />

Fleshy strap like leaves emerge from<br />

underground bulbs to form thick<br />

clumps.<br />

Spectacular white scented flowers<br />

emerge in clusters from 75cm high<br />

flower stalks.<br />

The flowers have six spider like petals<br />

that surround a white inner corona.<br />

This plant is particularly showy and<br />

can spot flower several times in the<br />

warmer months.


Photo: Lorna Rose<br />

Photo: immij floramedia<br />

Swamp Lily<br />

Crinum pedunculatum<br />

Flax Lilies<br />

Dianella species<br />

Other superior selections include;<br />

Hemerocallis species and hybrids – Day Lilies<br />

Robust clumping plant with<br />

thick leathery leaves which<br />

will grow in heavy water laden<br />

soils, saline situations and even<br />

the seashore.<br />

In spring and summer it<br />

produces several stout<br />

flowering stems with large<br />

clusters of thinly petalled white<br />

lily type flowers.<br />

Excellent Australian native<br />

selection with mid-dark green<br />

arching foliage and sprays of<br />

blue flowers followed by bright<br />

blue berries.<br />

There has been a proliferation<br />

of Dianella cultivars with a wide<br />

range of foliage colours and<br />

growth habits in recent years.<br />

Ask your retailer for the most<br />

reliable local selections.<br />

Arthropodium cirrhatum 'Matapouri Bay' – NZ Rock Lily<br />

Ask your local retailer for more superior selections<br />

71


Succulent Plants<br />

These have become very popular due to their drought hardy status<br />

and architectural appeal. Most succulents are non-invasive,<br />

however there are a number of succulents that can rapidly spread<br />

from dislodged plant parts, leaves or by seed. Be sure to read the<br />

plant label carefully and ask for advice about the non-invasive<br />

succulents at your local garden centre.<br />

72<br />

Photo: immij floramedia<br />

Century Plant<br />

Agave americana<br />

Photo: Photo: Doug Bickerton, SA<br />

Department for Environment & Heritage<br />

Perennial succulent with thick<br />

grey green sword shaped leaves<br />

in rosettes growing to 2m high<br />

and often forming clumps that<br />

are several metres wide. The<br />

leaves have teeth along the<br />

margins and a very sharp spine<br />

at the tip. Yellow flowers<br />

form<br />

on a large spike which can rise<br />

over 5m in height.<br />

HOW IT SPREADS<br />

This plant forms thick clusters as the main plant ‘suckers’ to<br />

produce many new plants.<br />

Plants that are in dumped garden waste readily take root and<br />

colonise natural areas.<br />

Photo: immij floramedia<br />

Flax Lilies<br />

Dianella species<br />

Excellent Australian native<br />

selection with mid-dark green<br />

arching foliage and sprays of<br />

blue flowers followed by bright<br />

blue berries.<br />

There has been a proliferation<br />

of Dianella cultivars with a wide<br />

range of foliage colours and<br />

growth habits in recent years.<br />

Ask your retailer for the most<br />

reliable local selections.


Photo: immij floramedia<br />

Photo: immij floramedia<br />

Cardboard Palm<br />

Zamia furfuracea<br />

Gymea Lily<br />

Doryanthes excelsa<br />

Other superior selections include;<br />

Eremophila 'Yanna Road' – Emu Bush<br />

A small to medium sized Cycad<br />

forming a neat ornamental<br />

clump.<br />

It has broad, hairy rigid leaflets<br />

which are fairly crowded on the<br />

1m long leaf stem.<br />

It has broad architectural<br />

appeal and is suitable for dry<br />

situations and actually resents<br />

poor drainage or too much<br />

shade.<br />

Australian native perennial lily<br />

with rosettes of large sword-shaped<br />

1 to 2 m long mid-green leaves.<br />

In spring and summer they have<br />

spectacular large, compact heads of<br />

nectar-filled, blood-red flowers atop<br />

tall, thick stems to 5 m high.<br />

A very hardy garden plant for most<br />

climates.<br />

<strong>Grow</strong>s best in full-sun to partshade.<br />

The flowers and leaves are both<br />

highly sought after for flower<br />

arranging.<br />

Arthropodium cirrhatum 'Matapouri Bay' – NZ Rock Lily<br />

Ask your local retailer for more superior selections<br />

73


Photo: Sheldon Navie<br />

HOW IT SPREADS<br />

Often spread through the dumping of garden waste, this<br />

plant is difficult to eradicate once established.<br />

The variegated form of Sansevieria is a popular indoor plant.<br />

This use is acceptable; however it should not be planted in the<br />

garden or disposed of in dumped garden waste.<br />

Photo: immij floramedia<br />

74<br />

Mother In Law’s Tongue<br />

Sansevieria trifasciata<br />

Bird of Paradise<br />

Strelitzia reginae<br />

Dense clumping plant with<br />

succulent sword-like foliage<br />

to 1m in height.<br />

Mottled upright grey green<br />

leaves with occasional pale<br />

cream flowers on spikes in<br />

Spring.<br />

Effective spreading habit,<br />

preferring moist and shaded<br />

areas.<br />

Glossy grey green paddle<br />

shaped foliage forming a dense<br />

clump 1.5m x 1.5m.<br />

Spectacular orange and blue<br />

flowers shaped like a birds head<br />

form on erect stems in warmer<br />

months.<br />

It is worth trying to obtain<br />

Strelitzia juncea for its rush like<br />

cylindrical foliage emerging<br />

without a leaf blade.


Photo: Barry Naylor<br />

Photo: immij floramedia<br />

Mat Rushes<br />

Lomandra species<br />

Flax Lilies<br />

Dianella species and cultivars<br />

Other superior selections include;<br />

Liriope 'Stripey White' – Stripey White<br />

Crinum pedunculatum –Swamp<br />

Lily<br />

This widely used accent plant<br />

has thick arching green foliage<br />

that emerges from a central<br />

crown.<br />

Suitable near waters edge or<br />

boggy areas but able to tolerate<br />

dry conditions as well, this is a<br />

most versatile alternative.<br />

Many new cultivars are now<br />

available with a range of foliage<br />

colours and growth habits.<br />

Excellent Australian native<br />

selection with mid-dark green<br />

arching foliage and sprays of<br />

blue flowers followed by bright<br />

blue berries.<br />

There has been a proliferation<br />

of Dianella cultivars with a wide<br />

range of foliage colours and<br />

growth habits in recent years.<br />

Ask your retailer for the most<br />

reliable local selections.<br />

Ask your local retailer for more superior selections<br />

75


Aquatic Plants<br />

In recent years aquatic plants have become a major invader.<br />

The cost of removal and control runs into many millions of<br />

dollars. These aquatic plants include Salvinia (Salvinia molesta),<br />

Water Hyacinth (Eichornia crassipes) and Cabomba (Cabomba<br />

caroliniana). There are many alternative plants which are more<br />

suitable for home aquariums and garden ponds.<br />

Photo: Terry Inkson<br />

Parrot Feather<br />

Myriophyllum aquaticum<br />

HOW IT SPREADS<br />

Parrot feather reproduces by fragments of stem breaking from<br />

the parent plant and is moved by water currents.<br />

Once also commonly found in home aquaria as the plant<br />

was once sold as an attractive fish<br />

tank plant. Inappropriate disposal of aquatic plants leads to choking of waterways,<br />

excluding all native flora and fauna.<br />

Photo: Glenfield Nursery<br />

76<br />

Water Milfoil<br />

Myriophyllum papillosum<br />

A feathery leaved, perennial<br />

aquatic plant with stems that<br />

grow up to 2m in length.<br />

The tips of the stems frequently<br />

protrude up to 30cm from the<br />

water.<br />

Seeds that are produced in<br />

Australia are infertile as only<br />

female plants are recorded here.<br />

A vigorous native milfoil with<br />

foxtail like stems held above<br />

the water.<br />

Provides shelter and spawning<br />

areas for fish.<br />

Suitable for full sun to light shade<br />

situations.<br />

Submerge up to 60cm.


Photo: Glenfield Nursery<br />

Photo: Norwood<br />

Upright Water Milfoil<br />

Myriophyllum crispatum<br />

Banded Nardoo<br />

Marsilea mutica<br />

Other superior selections include;<br />

Myriophyllum papillosum 'Red Dragonfly' – Red Dragonfly<br />

Nymphaea hybrids – Hybrid Water Lilies<br />

This native aquatic plant has<br />

delicately divided plumes<br />

which grow out and float on<br />

the water surface.<br />

Submerged up to 60cm deep,<br />

it provides excellent spawning<br />

environment for fish.<br />

Adaptable to either full sun or<br />

semi-shade.<br />

This aquatic fern has interesting<br />

foliage resembling a four leafed<br />

clover.<br />

The long rhizomes trail under<br />

the surface with the leaves<br />

floating on the surface.<br />

This plant provides an excellent<br />

cover for fish and other aquatic<br />

life as well as suppressing algal<br />

growth.<br />

Ask your local retailer for more superior selections<br />

77


Gardeners’ notes and checklists<br />

Use this page to make notes, plant lists or questions to ask gardening<br />

experts.<br />

78


82<br />

1 1)<br />

Invasive Plant Index<br />

Invasive plant name Page number<br />

Acacia baileyana 18<br />

African Olive 64<br />

Agave americana<br />

72<br />

Albizia lebbeck<br />

20<br />

Asparagus officinalis<br />

22<br />

Black Bamboo 38<br />

Black-eyed Susan 58<br />

Cadaghi 28<br />

Campsis radicans<br />

52<br />

Catharanthus roseus<br />

24<br />

Century Plant 72<br />

Common Indian Hawthorn 42<br />

Condamine Couch 56<br />

Cootamundra Wattle 18<br />

Coreopsis 26<br />

Coreopsis lanceolata<br />

26<br />

Corymbia torelliana<br />

28<br />

Cosmos 30<br />

Cosmos bipinnatus<br />

30<br />

Cotoneaster pannosus<br />

60<br />

Duranta erecta<br />

62<br />

Easter Cassia 48<br />

European Olive 64<br />

Firethorn 66<br />

Fountain Grass 68<br />

Fraxinus griffithii<br />

32<br />

Garden Asparagus 22<br />

Golden Bamboo 38<br />

Golden Rain Trees 34<br />

Golden-leaved Black Locust 44<br />

Indian Sirus 20<br />

Japanese Honeysuckle 54<br />

Koelreuteria elegans ssp. formosana 34<br />

Koelreuteria paniculata<br />

34


Invasive plant name Page number<br />

Lilium formosanum<br />

70<br />

Lippia 56<br />

Lombardy Poplar 40<br />

Lonicera japonica<br />

54<br />

Mock Orange 36<br />

Mother In Law's Tongue 74<br />

Mountain Ash 32<br />

Murraya paniculata<br />

36<br />

Myriophyllum aquaticum<br />

76<br />

Olea europaea ssp. europaea<br />

64<br />

Olea europaea subsp. cuspidata<br />

64<br />

Parrot Feather 76<br />

Pennisetum alopecuroides<br />

68<br />

Pepper Tree 46<br />

Phyla canescens<br />

56<br />

Phyla nodiflora<br />

56<br />

Phyllostachys aurea<br />

38<br />

Phyllostachys nigra<br />

38<br />

Pink Periwinkle 24<br />

Populus nigra 'Italica' 40<br />

Prickly Duranta 62<br />

Pyracantha species 66<br />

Racehorse Tree 50<br />

Red Trumpet Vine 52<br />

Rhaphiolepis indica<br />

42<br />

Robinia pseudoacacia 'Frisia' 44<br />

Sansevieria trifasciata<br />

74<br />

Schinus molle var. areira<br />

46<br />

Senna pendula var. glabrata<br />

48<br />

Silver-leaf Cotoneaster 60<br />

Swamp Foxtail 68<br />

Taiwan Lily 70<br />

Thunbergia alata<br />

58<br />

Tipuana tipu<br />

50<br />

83


1 2)<br />

Further information and<br />

additional resources<br />

1. Your local nursery or garden centre -<br />

Most employ trained nursery professionals or qualif ed<br />

horticulturists who are knowledgeable in regard to all aspects of<br />

plant selection.<br />

2. Your local council or shire -<br />

Have information about plants considered invasive in your local<br />

area and some good indigenous alternatives.<br />

3. State Government -<br />

<strong>Queensland</strong> Primary Industries and Fisheries have useful<br />

information about invasive plants.<br />

Visit www.dpi.qld.gov.au for more information.<br />

4. Australian Government -<br />

Weeds in Australia Website. An excellent website with a<br />

good range of information, references, lists, databases and<br />

pictures and other resources. Visit www.weeds.gov.au for more<br />

information.<br />

5. Weeds Australia via the Australian Weeds Committee -<br />

A national website resource created by the Australian Weeds<br />

Committee to promote access to key weed policies, regulations,<br />

current issues, national initiatives, research, extension, training<br />

and personnel. Visit www.weeds.org.au for more information.<br />

6. Nursery & Garden Industry <strong>Queensland</strong> (NGIQ) -<br />

PO Box 345 Salisbury Qld 4107 Australia<br />

Ph. +61 7 32777900 Fax. + 61 7 32777109<br />

email: info@ngiq.asn.au web: www.ngiq.asn.au<br />

7. Nursery & Garden Industry Australia -<br />

The Nursery & Garden Industry Australia is the national peak<br />

body for the nursery and garden industries in Australia. Their<br />

website provides useful information on invasive plants. Visit<br />

www.ngia.com.au and www.lifeisagarden.com.au for more<br />

information.<br />

8. <strong>Queensland</strong> Murray-<strong>Darling</strong> Committee (QMDC) -<br />

Provide natural resource management information and<br />

advice to local landowners and community members. Visit<br />

www.qmdc.org.au for more information.<br />

Printed on recycled paper with<br />

the environment in mind<br />

A Guide for Gardeners in<br />

<strong>Queensland</strong> <strong>Darling</strong> <strong>Downs</strong> <strong>Darling</strong><br />

<strong>Downs</strong>

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