Water regularly to keep the soil consistently moist, especially during active growth and flowering. Allow the top few centimeters of soil to dry out slightly between waterings.

Reduce watering during cooler months when growth slows. Ensure good drainage to prevent waterlogging, which can lead to root rot.

Pruning is minimal. Deadhead spent flowers to encourage continuous blooming and prevent self-seeding if unwanted. Trim back any leggy or overgrown stems to maintain a more compact shape.

Lightly pinch back young plants to promote bushier growth. Remove any yellowing or diseased foliage promptly.

Easily propagated from seeds sown directly outdoors in spring or autumn. Seeds germinate readily in moist, well-drained soil.

Can also be propagated by cuttings taken in spring or early summer, which root readily in moist soil or water.

Repotting is rarely necessary as White Wallrocket is often grown as an annual or short-lived perennial and prefers to be slightly root-bound. If grown in a container and it becomes root-bound, repot in spring into a slightly larger pot with fresh, well-draining potting mix.