Festuca Idahoensis

Idaho Fescue

Festuca idahoensis — commonly called Idaho Fescue — is a fine-textured, native ornamental grass (perennial) valued for its soft, blue-green foliage and natural, tufted habit. It forms small, dense clumps of narrow, wiry blades that create a delicate, airy appearance. In late spring to early summer, slender flower stems rise above the foliage, bearing light tan seedheads that add movement and seasonal interest. Its subtle color and texture make it well suited for naturalized and drought-tolerant plantings.

Mature Size:
Width: 12–18 in
Height: 12–24 in (to 24–30 in in bloom)

USDA Zones: 4a–8b
Light: Full sun to partial shade (best in full sun)
Soil: Well-drained soils; thrives in lean, sandy, or rocky conditions
Water: Low; highly drought tolerant once established

Wildlife: Provides cover for small wildlife; seeds may be used by birds

Features & Landscape Uses:
Form: Clumping grass with a soft, fine-textured habit
Blue-green foliage provides subtle color and movement
Excellent for naturalized plantings, prairie gardens, and slopes
Works well in xeriscapes and low-water landscapes
Blends well with wildflowers and native plantings

Maintenance:
Low maintenance; comb or lightly trim in early spring
Divide every few years to maintain vigor
Avoid overly rich or poorly drained soils

Plant type

Ornamental Grass

Height

12-24"

Width

12-18"

Hardiness zones

6–10

Sunlight

Full Sun, Partial Shade

Growth rate

Moderate

Leaf color

Blue Green

Soil

Well Drained, Wet Area

Landscape use

Accent Plant, Border, Container, Mass Planting

Shape

Clump

Deer resistant

Yes

Drought tolerant

No