Water regularly during the growing season, allowing the soil to dry slightly between waterings. Reduce watering significantly in winter. Ensure good drainage to prevent root rot. Overwatering can lead to fungal diseases.

Deadhead spent flowers to encourage further blooming and maintain a tidy appearance. In autumn, cut back the dead stems to just above ground level. This promotes healthy new growth in the spring and prevents disease.

Propagate by division in early spring or autumn. Carefully divide established clumps, ensuring each section has roots and shoots.

Alternatively, sow seeds in spring, either indoors or directly outdoors in a prepared seedbed.

Repot young plants annually in spring to provide fresh soil and adequate space for root growth. Mature plants can be repotted every 2-3 years or when they become root-bound. Use a well-draining potting mix.