Water regularly during the growing season, keeping the soil consistently moist but not waterlogged. Reduce watering in winter, allowing the top few centimeters of soil to dry out between waterings.

Ensure good drainage to prevent root rot, especially in containers.

Deadhead spent flowers to encourage further blooming and maintain a tidy appearance. Trim away any yellowing or damaged leaves as needed.

Minimal pruning is generally required; heavy pruning can be done after flowering to shape the plant and remove old foliage.

Propagate by dividing established clumps in spring or autumn. Carefully separate the rhizomes, ensuring each division has some roots and shoots. Alternatively, sow fresh seeds in spring, but germination can be erratic.

Allow seedlings to grow before transplanting.

Repot container-grown plants every 2-3 years, or when they become root-bound. The best time for repotting is in spring, just as new growth begins.

Use a well-draining potting mix and choose a pot that is only slightly larger than the current one.