Keep the soil consistently moist but not waterlogged, especially during the growing season. Water when the top centimeter of soil feels dry. Reduce watering in winter to prevent root rot.

Ensure good drainage to avoid soggy conditions which this plant dislikes.

Deadhead spent flowers regularly to encourage more blooms and maintain a tidy appearance. Remove any yellowed or dead leaves as they appear.

Pruning is generally minimal; focus on tidying the plant's form and removing any unhealthy foliage to promote vigor.

Propagate by division in early spring or autumn. Carefully divide established clumps, ensuring each section has roots and shoots. Alternatively, sow fresh seeds in autumn or spring in a cool, moist seed compost.

Cuttings can also be taken in late spring.

Repot young plants annually in spring, and mature plants every 2-3 years as needed. Use a well-draining, gritty compost. Choose a pot only slightly larger than the current root ball.

Ensure the crown of the plant is at soil level to prevent rot.