Water consistently once the top 2-3 cm of soil feels dry. Crambe alutacea prefers well-draining soil and dislikes waterlogged conditions, which can lead to root rot.

Reduce watering significantly during winter dormancy to prevent over-saturation.

Pruning is primarily done after flowering to tidy up the plant and prevent self-seeding if desired. Deadhead spent flower stalks.

In late autumn or early spring, remove any dead or damaged foliage to maintain a neat appearance. Minimal pruning is typically needed.

Crambe alutacea can be propagated by seeds sown in early spring or autumn, either directly outdoors or in a cold frame. Division of established clumps in spring is also an effective method.

Ensure seeds are stratified if sown in warmer conditions.

This plant is best left undisturbed once established in the garden. If container-grown, repot in spring every 2-3 years into a slightly larger pot with fresh, well-draining potting mix.

Avoid root disturbance as much as possible during repotting.