Danthonia unispicata, commonly known as Onespike Oatgrass, is a perennial grass that exhibits evergreen or semi-deciduous characteristics depending on the climate. It is native to open woodlands and grasslands, often associated with pine forests, in the Western United States and Canada. This grass typically reaches a modest height and width of 0.7-1 feet (0.2-0.3 meters), forming dense tufts of fine-textured foliage. The inflorescence is a single spikelet, hence the common name, which is not particularly showy but adds a subtle charm to naturalistic plantings.

Onespike Oatgrass is valued for its low maintenance requirements and its ability to thrive in poor soils, making it suitable for restoration projects and as a ground cover in xeriscapes. It is also used to stabilize soil and prevent erosion. In cultivation, it prefers full sun exposure and tolerates a range of soil conditions, though it performs best in well-drained soils. It is drought-tolerant once established, requiring only low to medium amounts of water. Gardeners should be aware that while it is generally disease-free, it may not compete well with more aggressive plants.CC BY-SA 4.0