Flowering sea kale, Crambe cordifolia

Crambe cordifolia

Flowering sea kale

  • Botanical name: Crambe cordifolia
  • Common name: Flowering sea kale
  • Family: Brassicaceae
  • Plant Type: Perennial
Flower colour:


Foliage colour:


A really exciting herbaceous perennial, Crambe cordifolia is not one to be missed. As summer begins, the rosette of foliage erupts into an enormous nebula of small, scented flowers, guaranteed to draw the eye, later followed by green, bead-like seed pods. Bees and butterflies love it.


It’s invaluable in a herbaceous border because few other plants look quite like it, so it’s always useful for adding some contrast.

For best results, grow Crambe cordifolia in full sun or partial shade in moist, fertile and well-drained soil. Deep soil is essential to accommodate the long tap root of the plant. Crambe cordifolia has been given the Royal Horticultural Society’s prestigious Award of Garden Merit (AGM).


Take a look at this video of Monty Don planting Crambe cordifolia in his garden.

How to grow Crambe cordifolia

  • Plant size

    2.5m height

    1.5m spread

  • Aspect

    South facing, west facing

  • Position in border

    Middle, back

  • Sun exposure: Full sun
  • Hardiness: Hardy

Crambe cordifolia and wildlife

Crambe cordifolia is known for attracting bees, beneficial insects, butterflies​/​moths and other pollinators. It has nectar/pollen rich flowers.

Attractive to Bees

Attractive to Beneficial insects

Does not attract Birds

Attractive to Butterflies​/​Moths

Attractive to Other pollinators

Is Crambe cordifolia poisonous?

Crambe cordifolia has no toxic effects reported.

No reported toxicity to:

No reported toxicity to Birds

No reported toxicity to Cats

No reported toxicity to Dogs

No reported toxicity to Horses

No reported toxicity to Livestock

No reported toxicity to People

Plants that go well with Crambe cordifolia