Download Queensland Darling Downs GMI ... - Grow Me Instead
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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>