Cyperus textilis, commonly known as flat sedge, basket grass, umbrella sedge, or mat sedge, is a perennial herb native to the riparian zones, wetlands, and marshy areas of southern Africa. It thrives near rivers, streams, and other water bodies, where it forms dense clumps. This species typically grows 3 to 10 feet tall and is characterized by its grass-like appearance with long, narrow leaves and triangular stems. The inflorescences are umbrella-like clusters of brownish spikelets that appear in the summer months, though they are not particularly showy.

Flat sedge is valued for its traditional use in crafting due to the strength and flexibility of its leaves and stems. It is used to make baskets, sleeping mats, rolled twine, and other woven articles. In cultivation, Cyperus textilis is often grown as an ornamental grass in water gardens, around ponds, and in naturalized wetland areas. It prefers full sun to part shade and requires consistently moist to wet soil conditions. While not commonly found in the horticultural trade, it can be an interesting addition to gardens that can mimic its natural wetland habitat. Potential problems include root rot if the soil is not sufficiently moist and the possibility of becoming invasive if conditions are ideal and it is grown outside its native range.CC BY-SA 4.0