Water consistently to keep the soil evenly moist, especially during dry spells. Allow the top 2-3 cm of soil to dry out between waterings. Reduce watering in winter to prevent root rot.

Ensure good drainage to avoid waterlogging, as this plant dislikes constantly wet feet.

Deadheading spent flowers can encourage further blooming and prevent self-seeding if unwanted. Prune back leggy or overgrown stems in late autumn or early spring to maintain a tidy shape.

Remove any dead or diseased foliage promptly to promote plant health and vigor.

Easily propagated from seed sown directly outdoors in autumn or early spring. Seeds may benefit from a period of cold stratification.

Can also be propagated from cuttings taken in late spring or early summer, rooted in moist, well-draining potting mix.

As an annual or short-lived perennial, frequent repotting is usually not necessary. If grown in containers and it becomes root-bound, repot into a slightly larger container in spring using a well-draining potting mix.

Avoid disturbing the roots too much.