Sea kale
Crambe maritima
Also called Seakale and Crambe
Garden plant · Herbs, veg & fruitA perennial you FORCE — put a tall pot over the crown in January and cut the blanched shoots in March, like asparagus with a nutty edge. Uncovered, it is a handsome blue-grey cabbage with a cloud of honeyed white flowers.
Care at a glance
- Ease
- Medium
- Water
- Every 6 daysWater the ground — water at the base, in the morning, not over the leaves.
- Light
- Full sun, in sharp-drained soil
- Feed
- Every 45 days
- Humidity
- Average
- Hardiness
- Hardy — a very cold winter RHS H6, to -20°C
- Size
- 0.6 m tall · 0.6 m across
- Lifecycle
- Perennial
- Origin
- The coasts of northern Europe, Britain included
Is it safe for pets and people?
PetsNothing recorded against it
No animal-poison authority lists this plant either way.
PeopleNot checked yet
Nobody has checked this one against a source for us yet, so treat it as unknown rather than safe.
Checked against ASPCA and RHS on 2026-09-21. Where a source says nothing, we say nothing.
A guide, not veterinary or medical advice. If a pet or a person has eaten a plant and you are worried, call your vet or doctor now — don’t wait for signs to appear. Spotted a mistake? Tell us.