Water regularly during the growing season, keeping the soil consistently moist but not waterlogged. Reduce watering in autumn and winter, allowing the soil to dry slightly between waterings.

Ensure good drainage to prevent root rot.

Deadhead spent flower stalks to prevent self-seeding and maintain a tidy appearance. Remove any dead or damaged foliage in late winter or early spring before new growth emerges. Minimal pruning is generally required.

Propagate by seed sown in autumn or spring, or by division of established clumps in early spring. Seeds may require stratification. Divisions should be replanted promptly into well-draining soil.

This plant is generally not a heavy feeder and prefers to be undisturbed. Repotting is rarely necessary. If required, repot container-grown specimens in early spring, using a well-draining potting mix.