Water thoroughly when the top 2-3 cm of soil feels dry. Allow soil to drain completely between waterings to prevent root rot. Reduce watering significantly during winter dormancy to avoid waterlogged conditions.

Prune after flowering to maintain shape and encourage bushier growth. Remove dead or spent flower stalks to prevent self-seeding if desired. Light trimming can be done to manage size.

Propagate from seed sown in autumn or early spring. Alternatively, take root cuttings in early spring. Ensure seeds are sown in well-draining soil and kept moist but not waterlogged.

Repot young plants annually or biennially in spring before new growth begins. Mature plants generally prefer to be slightly pot-bound and may not require frequent repotting. Use a gritty, well-draining compost.