Marsh dewflower thrives in consistently moist to wet conditions. Water frequently to keep the soil saturated, especially during warmer months. Avoid letting the soil dry out completely, as this can stress the plant.

In winter, reduce watering slightly but maintain damp soil.

Pruning is generally not required unless you need to manage the plant's spread or remove any dead or damaged foliage. Light trimming can encourage bushier growth.

If the plant becomes leggy, a more significant trim can help rejuvenate it.

Marsh dewflower is easily propagated by stem cuttings. Take cuttings from healthy stems, ideally 5-10 cm long, and plant them in moist soil or water. They root readily.

Division of established clumps is also an effective method in spring.

Repot marsh dewflower when it becomes root-bound, typically every 2-3 years. Use a well-draining potting mix that retains moisture, such as a peat-based blend.

Ensure the new pot is only slightly larger than the current one. Repot in spring.