Water regularly to keep the soil consistently moist during the growing season, especially in warmer climates. Reduce watering in winter, allowing the top inch of soil to dry out between waterings.

Ensure good drainage to prevent root rot.

Deadhead spent flowers to encourage further blooming and prevent self-seeding if desired. Minimal pruning is generally required. Remove any dead or damaged foliage as needed to maintain plant health and appearance.

Propagate from seeds sown directly outdoors in early spring or late autumn. Seeds benefit from stratification; sow them in a cold frame or unheated greenhouse. It can also be propagated by division in spring.

As an annual or short-lived perennial, repotting is generally not necessary for Silene dichotoma. If growing in a container, repot young plants in spring into fresh potting mix if they become root-bound.