Keep the soil consistently moist but not waterlogged, especially during dry periods. Water thoroughly when the top inch of soil feels dry. Avoid letting the plant dry out completely, as this can stress it.

Reduce watering slightly in cooler months when growth slows.

Deadhead spent flowers to encourage further blooming and maintain a tidy appearance. Trim back any leggy or overgrown stems in late spring or early summer to promote bushier growth.

Remove any dead or damaged foliage as needed throughout the growing season.

Stellaria nemorum can be propagated by division of established clumps in spring or autumn. Seed can also be sown outdoors in autumn or early spring in a sheltered spot.

Ensure the seeds have a period of cold stratification if sowing in spring.

Repotting is generally not necessary for Stellaria nemorum, as it is a perennial that prefers to naturalize. If division is performed, newly divided plants can be replanted directly into the garden or into pots with fresh, well-draining potting mix.