Eleocharis cellulosa, commonly known as Gulf Coast Spikerush, is an evergreen perennial grass native to freshwater marshes, wet prairies, and the edges of ponds and streams in the Southeastern USA, extending to Mexico and the Caribbean. It typically grows to a height of 4 feet (1.2 meters) and a width of 3 feet (0.9 meters). This sedge has a clumping form with slender, cylindrical, green stems and inconspicuous brownish spikelet flowers that appear at the stem tips during the summer months. While the flowers are not showy, the plant provides a lush, grass-like appearance and is valuable for its role in wetland ecology.

Gulf Coast Spikerush is appreciated for its ability to stabilize soil and filter water, making it an excellent choice for water gardens, rain gardens, and naturalized wetland areas. It is also used for erosion control along waterways. This plant thrives in full sun but can tolerate partial shade, and it requires consistently moist to wet soil conditions. It is adaptable to a range of soil types, from sandy to clay, as long as they are wet. While generally low-maintenance, it can spread aggressively in ideal conditions, so care should be taken to manage its growth in smaller garden settings.CC BY-SA 4.0