Idaho fescue
Festuca idahoensis
Care
full sun, part shade
very low
Fast, Medium, Slow; Adaptable, tolerant of sand, loam and clay.
1–3ft tall , 0–0ft wide
Jun-Aug
Resistant
Friendly
Sierra Nevada and Modoc Plateau from Kern County to Modoc County, 4000-10000 ft elevation in meadows and open conifer forests, extending to Oregon.
Care Guide
Planting
Plant Idaho fescue in full sun to part shade in spring or fall, choosing a spot with fast to slow draining soil - it's adaptable to sand, loam, and clay. Space plants about 1–2 feet apart to allow for their mature clump size of 1–3 feet tall. This grass pairs beautifully under oaks and alongside ferns, Heuchera, and hummingbird sage, making it ideal for naturalized areas or as a lawn alternative.
After Planting
Water weekly during the first growing season to establish a deep root system, then taper off to once monthly or less during summer once established. Idaho fescue requires virtually no pruning or maintenance - the main mistake is overwatering, which this drought-tolerant native doesn't need. Expect soft, fine-textured green growth year-round, with delicate flowers blooming June through August.
Wildlife Supported
Insects
larval food plant for early season generations
larval development on grass blades mid to late summer