Maintain consistently moist soil, as this plant thrives in wet conditions. Water regularly, ensuring the soil never dries out completely. In containers, frequent watering is essential, especially during warmer months.

Avoid waterlogged conditions that can lead to root rot if drainage is poor.

Pruning is usually not necessary unless you want to manage its size or shape, or remove any dead or damaged foliage. Pinching back stems can encourage bushier growth.

Remove spent flower stalks to prevent self-seeding if it becomes too prolific in your garden.

Easily propagated from seeds sown directly into moist soil in spring or fall. Stem cuttings can also be taken and planted in water or moist soil.

This plant readily self-seeds, often colonizing suitable damp areas naturally, making propagation quite straightforward.

Repot annually in spring if grown in containers. Choose a pot slightly larger than the previous one. Ensure fresh, moist potting mix, ideally one that retains moisture well.

Marsh Yellow-Cress prefers not to be disturbed excessively, so repot gently.