Water regularly, especially during dry periods, ensuring the soil remains consistently moist but not waterlogged. Allow the top inch of soil to dry out between waterings.

Reduce watering in cooler months when growth slows. Good drainage is crucial to prevent root rot.

Deadhead spent flowers regularly to encourage further blooming and prevent self-seeding, which can be aggressive. Cut back foliage in late autumn or early spring to remove dead or damaged growth and tidy the plant.

This promotes vigorous new growth in the next season.

Propagate by seed sown in autumn or early spring. Seeds require light for germination and should not be covered deeply.

Alternatively, softwood cuttings can be taken in late spring or early summer and rooted in moist potting mix. Division of established clumps is also effective in spring.

Repot container-grown plants every 1-2 years in spring, or when they become root-bound. Choose a pot that is only slightly larger than the current one.

Use a well-draining potting mix, typically a standard compost blend with added grit or perlite for improved aeration.