Aristida glabrata, commonly known as Santa Rita Threeawn, is a perennial grass that exhibits evergreen or semi-deciduous characteristics depending on environmental conditions. It is native to arid regions, including deserts, grasslands, and the chaparral and scrub ecosystems of the Southwestern United States and Northwest Mexico. This grass typically reaches a height of 1-3 feet (0.3-0.9 meters) and a width of 0.4-1 feet (0.1-0.3 meters), forming clumps of narrow, wiry leaves and delicate, purplish inflorescences that add texture to the landscape.

Santa Rita Threeawn is valued for its low water requirements and its ability to thrive in hot, dry conditions, making it an excellent choice for xeriscaping and naturalistic plantings. It is often used for erosion control on slopes and in restoration projects where its deep roots stabilize the soil. The plant’s fine foliage and airy seed heads provide visual interest, particularly when backlit by the sun. It is best grown in well-drained soils and requires minimal maintenance once established. However, it can self-seed and may become invasive in some areas, so gardeners should monitor its spread.CC BY-SA 4.0