Thyme-Leaved Sandwort prefers well-drained soil and requires moderate watering. Allow the soil to dry out slightly between waterings, especially during its active growing season. Overwatering can lead to root rot.

Reduce watering in cooler months when the plant is dormant.

Pruning is usually minimal for Arenaria serpyllifolia. Dead or leggy stems can be trimmed back to maintain a tidy appearance and encourage bushier growth.

Light trimming after flowering can help prevent excessive self-seeding if desired.

Propagation is easily achieved through seeds sown in spring or autumn. Cuttings can also be taken from healthy growth during the summer months.

Division of established clumps is another effective method, best done in spring.

Repotting is typically only necessary if the plant becomes root-bound or needs to be moved to a new location. Use a well-draining potting mix. Repot in spring before new growth begins.

Arenaria serpyllifolia generally prefers to be slightly pot-bound.