Water Diplotaxis catholica regularly, especially during dry periods. Allow the top 2-3 cm of soil to dry out between waterings. Avoid overwatering, as this can lead to root rot.

In hot weather, more frequent watering might be necessary. Ensure good drainage.

Pruning Diplotaxis catholica is minimal. Deadhead spent flowers to encourage more blooms and maintain a tidy appearance. Light trimming can be done in early spring to shape the plant or remove any winter damage.

Avoid heavy pruning.

Propagate Diplotaxis catholica by seeds sown directly outdoors in early spring or autumn. It can also be propagated by cuttings taken in late spring or early summer.

Seeds germinate readily, making it easy to establish new plants.

Repotting is generally not required for Diplotaxis catholica as it is often grown as an annual or biennial. If grown in a container and it becomes root-bound, repot in spring into a slightly larger pot with fresh, well-draining potting mix.