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Crambe maritima (Sea kale)

Other names: Sea cabbage , Sea colewort , Seakale

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Species
C. maritima is a spreading, mounding perennial with large, round, ruffled, blue-green leaves. In early summer it has thick stems that are topped with flat racemes of white, scented flowers.
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Season of interest

Flower

Spring Summer Autumn Winter
Flower

Foliage

Spring Summer Autumn Winter
Foliage
Height and spread

Height and spread

Size Max height Max spread To maturity
0.75 m 0.6 m 2-5 years
2 ft 1 ft 2-5 years

Where to grow

Soil type
  • Chalky
  • Loamy
  • Sandy
Soil drainage
  • Well-drained
Soil pH
  • Acid
  • Alkaline
  • Neutral
Sunlight
  • Partial Shade
  • Full Sun
Aspect
  • East
  • West
  • South
Exposure
  • Sheltered

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Additional plant details

Cultivation

Grows bestfertile, well-drained soil in full sun. It will tolerate poor soil and light shade, but needs shelter from strong winds.

Suggested uses

Architectural, Flower Arranging, Beds and borders, Cottage/Informal, Wildlife, Add to salads

UK hardiness

H7

USDA zones

Zone 6, Zone 7, Zone 8, Zone 9

Sunset zone

A2, A3, 2, 3, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17

WUCOLS

North-Central Coastal = Unknown
Central Valley = Unknown
South Coastal = Unknown
South Inland = Unknown
High and Intermediate Desert = Unknown
Low Desert = Unknown

Foliage

Deciduous

Habit

Cushion or Mound Forming, Spreading

Native to

Northern Europe, Western Europe

Drought tolerant

No

Flood tolerant

No

Fragrance

The flowers are scented.

Toxicity

Not toxic

Plant care

Pruning

Cut down to ground level in autumn.

Propagation methods

Seed, Division, Root cuttings

Pests

Flea beetles

Slugs

Caterpillars

Diseases

Clubroot

Plant container grown plants in deep fertile, well-drained soil

Take root cuttings

Divide and replant in spring

Plant container grown plants in a sunny sheltered spot

Cut back in autumn (optional)

Sow seeds in a cold frame in autumn

Sow seeds in a cold frame in spring

Other plants

Plants in this Genus (2)

Crambe

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Crambe cordifolia
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Crambe cordifolia Greater sea kale
Crambe maritima
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Crambe maritima Sea kale
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Companion plants (0)

Related content

Discuss Crambe maritima with other Shoot members

Crambe maritima

Shoot User
960 0
Sea-kale was once extensively cultivated as a vegetable, so much so that it was even exported. The young shoots are blanched under pots to reduce bitterness. They can then be picked and served like spinach. The caterpillars of the large and small white butterflies will feed on sea-kale.
Posted: Saturday 20th of June 2009 07:38 PM Last reply: Saturday 1st of March 2025 12:58 AM

This plant is featured at Chelsea Flower Show 2009

Nicola
728 0
Crambe maritima (Sea kale) has been used in The Daily Telegraph for Chelsea Flower Show 2009.
Posted: Sunday 17th of May 2009 07:48 PM Last reply: Saturday 1st of March 2025 12:36 AM
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