Water Mercurialis corsica moderately during the growing season, allowing the soil to dry slightly between waterings. Reduce watering significantly in winter, providing just enough to keep the soil from becoming bone dry.

Overwatering can lead to root rot, especially in poorly draining soils.

Pruning is generally minimal for Mercurialis corsica, primarily for shaping or removing dead or damaged stems. Light trimming can be done in early spring before new growth begins to encourage a bushier habit.

Deadheading spent flowers is not usually necessary.

Mercurialis corsica can be propagated by seed sown in autumn or early spring. It also readily self-seeds. Division of established clumps in spring or autumn is another effective method.

Cuttings can also be taken in summer, though this is less common.

Repot Mercurialis corsica when it becomes root-bound, typically every 2-3 years. Spring is the ideal time for repotting, before the plant enters its active growth phase.

Use a well-draining potting mix and a pot that is only slightly larger than the current one.