Water regularly, especially during dry spells, ensuring the soil remains consistently moist but not waterlogged. Allow the top inch of soil to dry out slightly between waterings to prevent root rot.

Reduce watering in winter when the plant is dormant.

Deadhead spent flowers to encourage further blooming and maintain a tidy appearance. In late fall or early spring, cut back dead or untidy foliage to the ground. This promotes new growth and prevents disease.

Propagate by division of clumps in early spring or fall. Seeds can also be sown in fall or early spring, either directly outdoors or in a cold frame. Stem cuttings can be taken in late spring or early summer.

Repot established plants every 2-3 years in early spring to refresh the soil and prevent overcrowding. Choose a pot only slightly larger than the current one. Ensure good drainage holes to avoid waterlogged conditions.