Light. Full sun or partial sun. Shelter it from harsh wind, which damages the umbrella-like tops.
Water. Keep the roots wet at all times. It grows in standing water or constantly wet soil; brown tips mean it is too dry.
Soil and feeding. It prefers fertile soil. Grow it in a pot set in a pond or water garden.
Size. Usually about 4 ft, up to 6 ft in warm, wet spots.
Pruning. Cut out tall stems that flop over, since they root where the tops touch wet ground. Divide crowded clumps to make new plants.
Problems to watch. No serious pest problems. It spreads by rhizomes and seed, so keep it contained in a pot rather than planting it in open soil.
Good to know. It is frost tender. Cut stems can be used in flower arrangements.
Sources: NC State Extension Plant Toolbox: Cyperus alternifolius (umbrella plant) · UF/IFAS Gardening Solutions: Papyrus
