Aristida longiseta, commonly known as Fendler Threeawn, is a deciduous perennial grass native to a variety of habitats including grasslands, prairies, and open woodlands in the Western and Central USA, and Western Canada. It typically grows to a height and width of 1-2 feet (0.3-0.6 meters), featuring fine-textured foliage and distinctive three-pronged seed heads that give the plant its common name. The inflorescences appear in late summer to fall and are not particularly showy, but they add a unique texture to the landscape. Fendler Threeawn’s seed heads persist into winter, providing visual interest and food for wildlife.

Fendler Threeawn is valued for its drought tolerance and ability to thrive in poor, well-drained soils, making it an excellent choice for xeriscaping and naturalized areas. It is often used in restoration projects, as it is native and supports local ecosystems. This grass is also used for erosion control due to its extensive root system. In cultivation, it requires minimal care, thriving in full sun and tolerating low water conditions once established. While generally disease-free, it can become invasive if conditions allow for unchecked seed dispersal.CC BY-SA 4.0