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 out slightly between waterings.

Ensure good drainage to prevent root rot, especially in containers.

Prune back to the ground in early spring to encourage vigorous new growth. Deadhead spent flowers regularly throughout the summer to promote continuous blooming and maintain a tidy appearance.

Remove any damaged or diseased stems promptly.

Propagate by semi-ripe cuttings taken in summer. Dip the base of cuttings in rooting hormone and insert into a well-draining compost. Keep moist and warm, ideally with bottom heat, for successful root development.

Repot container-grown plants in spring every 2-3 years, or when they become root-bound. Use a good quality, free-draining potting mix. Choose a pot that is only slightly larger than the current one to avoid overwatering.