Water regularly during the growing season, especially in dry periods. Allow the soil to dry out slightly between waterings. Reduce watering significantly in winter, keeping the soil barely moist to prevent root rot.

Ensure good drainage to avoid waterlogging.

Deadhead spent flower stalks to maintain a tidy appearance and prevent self-seeding if not desired. Cut back dead foliage in late autumn or early spring before new growth emerges.

Minimal pruning is generally required beyond removing dead material.

Propagate from seed sown in spring, either indoors or directly outdoors in a well-drained seedbed. Germination can be slow and erratic.

Division of established clumps is best done in spring or early autumn after flowering has finished.

Repot established plants infrequently, perhaps every 3-5 years, or when they become pot-bound. This is best done in early spring before new growth begins.

Use a well-draining potting mix and a slightly larger pot to accommodate root growth.