Crambe maritima 'Lilywhite'

RHS Plant Profile
sea kale 'Lilywhite'
Plants for pollinators
Herbaceous Perennial

A versatile, robust perennial about 60-75cm tall, grown for the edible shoots, which are usually blanched for several weeks before harvesting. The young wavy-edged blue-green leaves are also edible and used as a cooked vegetable, and young flowering shoots bearing small white flowers, are cooked like sprouting broccoli

Position

Full sun, Partial shade

Soil Types

Chalk, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
0.5-1 metres

Growing Conditions

Chalk Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
South–facing or West–facing or East–facing
Exposure
Sheltered
Hardiness
H7

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Brassicaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Clump forming
Genus
Crambe are robust annuals and perennials with large, simple or divided leaves and racemes or large panicles of small, fragrant white flowers
Name Status
Accepted

How to Grow

Cultivation

Ideally grow in fertile, well-drained soil in full sun although it will tolerate poor soil and partial shade. Provide shelter from strong winds; young shoots, leaves and flowering shoots are edible and can be used as a cooked vegetable

Propagation

Propagate by seed sown in pots in a cold frame in spring or autumn or propagate by division in early spring or take root cuttings in winter

Suggested planting locations and garden types

  • Coastal
  • Cottage and informal garden
  • Gravel garden
  • Wildlife gardens
  • Cut flowers
  • Flower borders and beds

Pruning

Cut down to ground level in autumn

Pests

May be susceptible to slugs and caterpillars

Diseases

May be susceptible to club root