Water regularly, keeping the soil consistently moist but not waterlogged, especially during dry periods. Allow the top inch of soil to dry out slightly between waterings once established.

Reduce watering in winter to prevent root rot. Adequate moisture promotes healthy foliage and abundant blooms.

Deadhead spent flowers regularly to encourage further blooming and maintain a tidy appearance. In late autumn or early spring, cut back the faded flower stalks and foliage to about 10-15 cm above the ground.

This promotes vigor and prevents self-seeding if unwanted.

Propagate by division of clumps in early spring or autumn. Carefully dig up the plant and divide the root ball into sections, ensuring each section has healthy roots and shoots. Replant immediately in well-prepared soil.

Can also be grown from seed sown in autumn.

Repot container-grown plants every 2-3 years, or when they become root-bound. Choose a pot one size larger than the current one. Use a good quality, well-draining potting mix.

Repotting helps refresh the soil and provides more space for root development, supporting better growth.