Keep the soil consistently moist but not waterlogged. Water regularly, especially during dry periods, to prevent the soil from drying out completely. Overwatering can lead to root rot, so ensure good drainage.

Pruning is typically not necessary for Cardamine parviflora. If the plant becomes too leggy or overgrows its space, you can trim it back to maintain a desired shape or size.

This can be done after flowering to encourage a tidier appearance.

Propagation is easily achieved through seed sowing. Seeds can be sown directly outdoors in autumn or early spring.

The plant readily self-seeds, so division of established clumps is also an effective method, best performed in spring.

Repotting is rarely needed for Sand Bittercress as it is often grown as an annual or self-seeds readily. If grown in a container and it becomes root-bound, repot in spring to a slightly larger container with well-draining soil.