Water regularly during the growing season, allowing the soil to dry slightly between waterings. Reduce watering in autumn and winter, as the plant enters dormancy.

Ensure good drainage to prevent waterlogged roots, which can lead to root rot. Overwatering is more detrimental than underwatering.

Deadhead spent flowers regularly to encourage further blooming and maintain a tidy appearance. In late autumn or early spring, cut back the old foliage to the ground.

This helps promote vigorous new growth and prevents the plant from becoming leggy or overgrown.

Propagate by division of established clumps in spring or autumn. Carefully separate the root ball into smaller sections, ensuring each section has healthy roots and shoots.

Replant divisions immediately into well-draining soil. It can also be propagated from seed sown in spring.

Repot established plants every 2-3 years in spring before new growth begins. Choose a pot that is slightly larger than the current one. Use a well-draining compost mix.

If dividing, repot the divisions into appropriate-sized pots. Ensure the new pot has drainage holes.