Spatterdock thrives in consistently moist to waterlogged conditions, mimicking its natural bog and pond habitats. Ensure the soil remains saturated. For container plants, submerge the pot in a water garden or pond.

Avoid letting the substrate dry out, which can stress the plant and hinder growth.

Pruning is generally minimal for spatterdock. Remove yellowed or dead leaves and flower stalks as they appear to maintain a tidy appearance and direct energy to healthy growth.

Cut stems back to the water surface or the rhizome base. This promotes plant vigor and prevents decay.

Spatterdock is easily propagated by dividing its thick rhizomes. In spring, carefully dig up the plant and divide the rhizomes into sections, ensuring each piece has at least one bud or growing point.

Replant these divisions immediately into suitable water or moist soil.

Repotting is usually only necessary when the plant outgrows its container or when division is performed. This is best done in early spring before active growth begins.

Use a large, sturdy pot with good drainage, filled with a heavy loam or aquatic planting medium.