European Waterclover thrives in consistently moist to submerged conditions. For potted plants, ensure the soil is always wet, with the water level ideally 2-5 cm above the soil surface.

In ponds, it can tolerate being fully submerged. Avoid letting the soil dry out completely at any stage of growth.

Pruning is generally not required for *Marsilea quadrifolia*. If the plant becomes overly vigorous and starts to crowd other aquatic plants, you can simply thin out excess growth by removing unwanted rhizomes or leaves.

This can be done at any time during the growing season.

*Marsilea quadrifolia* readily propagates through rhizome division. Simply separate healthy sections of the creeping rhizome, each with a few leaves and roots, and replant them in suitable substrate.

It can also be grown from spores, though this is a slower method.

Repotting is typically needed when the rhizomes have filled the current container or when you wish to divide the plant. This is best done in spring.

Gently remove the plant, divide the rhizomes, and replant them in fresh, nutrient-rich aquatic potting mix in a larger pot or suitable aquatic environment.