Eleocharis dulcis thrives in consistently moist to submerged conditions. Keep the soil wet or place pots in a water tray, ensuring the water level is always a few centimeters above the soil surface.

Avoid letting the soil dry out completely, especially during active growth.

Pruning is minimal for Chinese Water Chestnut. Remove any yellowed or dead foliage as it appears to maintain a tidy appearance and prevent disease.

No significant shaping or pruning is typically required for this aquatic plant.

Propagate Eleocharis dulcis by dividing established rhizomes in spring.

Simply split larger clumps into smaller sections, ensuring each piece has at least one growth point, and replant them in moist soil or shallow water. It can also be grown from seed, but division is more common.

Repot Chinese Water Chestnut in spring, just as new growth begins. Choose a container that is slightly larger than the previous one.

Use a well-draining potting mix, preferably one formulated for aquatic plants or a heavy loam. Ensure the new pot is deep enough to accommodate the rhizomes.