Water regularly during the growing season, allowing the soil to dry out slightly between waterings. Reduce watering in autumn and winter to prevent waterlogging.

Ensure good drainage to avoid root rot, especially in containers. Aim for consistently moist but not saturated soil.

Deadhead spent flowers regularly to encourage continuous blooming and maintain a tidy appearance. In late autumn or early spring, cut back the plant to the ground to promote vigorous new growth.

Remove any dead or damaged stems throughout the year.

Propagate from seed sown in autumn or early spring. Seeds can be sown directly outdoors or in a cold frame. Division of established clumps in spring is another effective method.

Ensure divisions have healthy roots before replanting.

Repot container-grown plants every 2-3 years, or when they become root-bound. Spring is the ideal time for repotting. Use a well-draining potting mix, such as a loam-based compost with added grit.

Ensure the new pot is only slightly larger than the previous one.