Plants in this genus are found in shallow water beside streams and lakes in the Northern hemisphere, particularly in East Asia. Ornamental linear fans of leaves are beautiful grown around pools, bogs, and marshes.
Noteworthy CharacteristicsAdaptable to aquariums. Rhizomatous, marginal aquatic perennials.
CareGrow in pool margins, or wet or very moist soil in full sun. Avoid disturbing roots. Grow smaller cultivars in aquatic containers to minimize root disturbance.
PropagationDivide rhizomes in early spring, pot up, and plant when established. Divide the rhizomes every 3 or 4 years to prevent congestion.
ProblemsRoot rots, rust, and fungal leaf spots.