Crambe cordifolia

Flowering Sea Kale

Crambe cordifolia
Price: £2.25
RHS Award of garden meritRHS Perfect for pollinatorsAttractive to pollinators
    Frequently seen in parks, gardens and the like and frequently sought after by the admiring public, is this magnificent plant for the back of the border. It has large, lobed, wavy margined, fleshy leaves up to 3ft long, and bears in July and August enormous, much-branched panicles of countless, honey-scented, creamy-white flowers looking just like a super-duper, king-sized Gypsophila. Hardy throughout the British Isles. 6ft (1.8m)

    Genus: Crambe

    Species: cordifolia

    Family Name: Brassicaceae/Cruciferae

    Seed Catalogue No.: 406A

    English Name(s): Flowering Sea Kale

    Hardiness: Hardy

    Lifecycle: Perennial

    Colour: White Cream

    Flowers: July, August

    Lighting Conditions: Full Sun, Partial Sun, Sheltered Sun

    Soil Type: Chalk, Sand, Loam

    Soil Acidity: Alkaline, Neutral, Acid

    Moisture: Well-drained

    Customer Reviews - Crambe cordifolia

    Average Rating: 5 (5 of 5 based on 1 reviews)

    Crambe cordifolia

    Easy seeds

    Reviewed by Helen Harrison on

    Great germination, plants over wintered in the greenhouse looking forward to planting them oit

    Rating: 5/55

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    Customer Review - Crambe cordifolia

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    Germination Instructions

    Sow indoors immediately. Sow 12mm deep into moist well-drained seed compost. Ideal temp. 18°C for 6-8 weeks. Renowned for germinating irregularly over a long period. If germination does not occur cold stratify. Move to 5°C. for 6-8 weeks. Repeat process until germination occurs. Transplant seedlings once large enough to handle to 8cm pots. Plant out to final position once 10cm tall in rows 75cm apart with 75cm spacing.

    Growing Instructions

    Prefers deep, fertile, well-drained soil in full sun. Provide shelter from strong winds. Does not like to be cramped. Young plants may suffer slug attack, treat as required.

    Cultivation Instructions

    Cut down to ground level in autumn. The seed pods do not open but drop off allowing seeds to germinate around the parent plant. Transplant small seedlings asap. Propagate by division in spring or autumn.

    When to Sow

    JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD
    • Sow Under Cover/Plant Indoors
    • Flowers/Harvest

    Approximate number of seeds per packet: 10

    Please note we pack the majority of our seeds by volume so the number of seeds indicated is only an approximation.