Lesser swine-cress prefers consistently moist soil. Water regularly, especially during dry periods, but avoid waterlogged conditions which can lead to root rot.

Allow the top 1-2 cm of soil to dry slightly between waterings. Reduce watering in cooler months when growth slows.

Pruning is typically not required for lesser swine-cress unless it becomes overly leggy or to manage its spread. You can lightly trim back leggy stems to encourage bushier growth.

Remove any spent flower stalks to prevent excessive self-seeding if desired.

Lesser swine-cress is easily propagated by seed. Seeds can be sown directly into the garden in spring or autumn. They germinate readily under suitable conditions.

Division of established plants is also possible, though less common due to its self-seeding nature.

Repotting is generally not necessary for lesser swine-cress as it is often grown as an annual or a short-lived perennial, and tends to self-seed readily. If grown in a container and it becomes root-bound, repot into a slightly larger container in spring.