Water moderately during the growing season, allowing the soil to dry out slightly between waterings.

Reduce watering significantly in autumn and winter, especially if grown in cooler conditions, to prevent waterlogging and root rot. Ensure good drainage.

Prune lightly after flowering to maintain a tidy shape and encourage a second flush of blooms. Remove any dead or spent flower stems.

Harder pruning is usually not necessary but can be done in early spring to remove winter damage or reduce plant size.

Propagate by seed sown in spring or autumn, either in pots or directly into the garden. Cuttings can also be taken in late spring or early summer, kept moist, and placed in a well-drained medium.

Division of established clumps is also an option.

Repot Sea Campion only when necessary, typically every 2-3 years or when the plant becomes pot-bound. Use a well-draining compost mix, such as a sandy loam or a cactus/succulent mix.

Repot in spring before new growth begins.