Agrostis variabilis, commonly known as Mountain Bentgrass, is a perennial grass native to montane and alpine regions across North America, particularly in the Rocky Mountains and the Pacific Northwest. It thrives in moist, well-drained soils found in subalpine meadows, wetlands, and open woodlands, often at elevations above 6,000 feet. Mountain Bentgrass typically grows up to 2 feet tall and is characterized by its fine-textured, bright green leaves and airy flowering panicles that appear in summer. The flowers are not particularly showy, but they add a delicate texture to the landscape.

Mountain Bentgrass is valued for its adaptability to moist environments and its ecological role in providing habitat and food for various wildlife species, including birds and small mammals. It is often used in restoration projects to stabilize soil and prevent erosion. In cultivation, it requires consistent moisture and can tolerate a range of light conditions from full sun to partial shade. While it is not commonly used in ornamental gardening, it can be an effective ground cover in naturalized areas or rain gardens. Gardeners should be aware that in optimal conditions, it can spread vigorously, potentially becoming invasive.CC BY-SA 4.0