Umbrella Grass

Cyperus alternifolius (sy-PEER-us al-tern-ee-FOH-lee-us)

Family: Cyperaceae Non-native Herbaceous (3-15 ft)

Cyperus comes from a Greek word meaning 'sedge', while alternifolius translates to 'alternate-leaved'. The common name of Umbrella Plant, Palm, Sedge, or Grass comes from the bracts that grow atop its tall stems. They have the appearance of the spokes of an umbrella. The bracts are sometimes referred to as leaves. The true leaves on this plant clasp the tall stem in a manner so that they are hard to distinguish from the stem. The Umbrella Plant is a member of a large family of plants, with over 600 grass-like varieties, typically native to predominantly tropical locations. Its root system is well-developed, anchoring the plant into the surrounding wet soil where it can spread via its rhizomes as well as by its self-seeding tendencies. In some locations, with the right conditions, it can become weedy and invasive. Typically reaching heights of 4', under ideal outdoor conditions of a warm, moist environment, they can grow up to 6'. As a houseplant, the size can be cut in half. This plant does well in sun or light shade; however, it requires protection from strong sun and harsh winds, as the bracts can be damaged from exposure. Whether you grow it as part of a water garden or indoors as a houseplant (container on a tray of water), keep the soil moist or grow in standing water. Fertile soil is preferred. Brown leaf tips can be caused by a lack of proper water conditions. The roots need to remain wet at all times. It can be used as a filter for soils. Known as phytoremediation, where plants can extract and remove pollutants from soils, Cyperus alternifolius can accumulate copper and manganese from the surrounding soil. Quick ID Hints : Grass-like leafy bracts form umbrella at top of scape Stem (scape) up to 3' long, green, glabrous 20-25 linear, leaflike bracts crowded at scape top The inflorescence is non-ornamental. The scapes tend to grow so long that they flop over and take root, so they may require support. Insects, Diseases, and Other Plant Problems: No serious issues. More information on Cyperus .

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 58 attributes.