Water regularly, allowing the soil to dry slightly between waterings. It prefers consistently moist soil but can tolerate short dry spells once established. Avoid overwatering, which can lead to root rot.

Reduce watering in cooler months when growth slows.

Remove spent flower stalks to encourage further blooming and maintain a tidy appearance. Trim back any yellowing or dead foliage as needed, especially in late winter or early spring before new growth emerges.

This helps promote vigor.

Propagate by dividing established clumps in early spring or autumn. Seeds can also be sown in autumn or early spring. Germination may be erratic; stratification can improve success.

Division is generally the most reliable method for home gardeners.

Repot container-grown plants every 2-3 years in spring. Choose a pot that is only slightly larger than the current one. Use a well-draining potting mix, such as a blend of peat moss and perlite.

Ensure good drainage to prevent waterlogging.