Keep the soil consistently moist, especially during warmer months and dry spells. Water deeply when the top 2-3 cm of soil feels dry to the touch. Avoid waterlogged conditions, which can lead to root rot.

Reduce watering slightly in cooler, dormant periods.

Prune back spent flower stalks after blooming to maintain a tidy appearance and prevent self-seeding. Remove any dead or damaged foliage at any time of year.

Heavy pruning is generally not required but can be done in late winter or early spring to rejuvenate plants.

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

Seed propagation is also possible but slower.

Repot container-grown plants every 2-3 years, or when they become root-bound. The best time to repot is in early spring before new growth begins.

Use a good quality, well-draining potting mix and a pot that is slightly larger than the current one.