Students for Stewardship The Cork Board
← Back to the library

Blue Fescue

Festuca glauca (fes-TOO-kah GLAW-kah)

Family: Poaceae Unknown Herbaceous (1-3 ft)

Blue fescue is a semi-evergreen, clumping, low-growing, short-lived, cool-season, perennial, ornamental grass. It has a dome-shaped habit with fine, needle-like, blue-gray blades that project upward and outward. It matures to a height of 9 to 12 inches and spreads from 12 to 18 inches. In late spring to early summer, green, purple-tinged flowers appear in terminal panicles, and seed heads follow. It is native to Spain and as far as north and northwestern Italy, and is a member of the grass family (Poaceae). The genus name Festuca i s derived from Latin and means "stalk" or "straw." The specific epithet glauca is Latin and means bluish-green. This ornamental grass prefers full sun but will tolerate some partial shade. Thrives in medium-moist to dry, well-drained soils. It is drought and poor-soil-tolerant, but is intolerant of wet or poorly drained soils. In mild climates, the grass may retain its bluish-gray color over winter, but in colder climates or during severe winter weather, the grass will show signs of browning. The grass also tends to decline in hot, humid summer months. Clumps tend to die and require division every two to three years, and are either replaced or replanted. The best method of propagation is by division. The grass may be propagated by seed, but there may be variations in the leaf blade color. Blue fescue is grown for its blue-gray foliage and may be used as a semi-green ground cover or accent plant. It is most attractive in the spring and fall, and it blends well with other ornamental grasses. Insects, Disease, and Other Plant Problems: No significant insect or disease problems. Short-lived ornamental grass that does not tolerate hot or humid conditions. Deer and rabbits are known to graze the foliage.

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 49 attributes.

How it fits the guild

Guild layer 4 - Herbaceous (1-3 ft) Optimal soil pH Acid (<6.0); Alkaline (>8.0); Neutral (6.0-8.0)
See companions & conflicts ↓

Companions & Conflicts

Curated pairwise relationships between this plant and others in the library — who feeds whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.

No curated interactions recorded for this species yet.

Also noted by NC State

Related species the NC State Plant Toolbox flags for this plant — look-alikes to tell apart, and plants that play a similar role in a planting. Ones we carry in the library are linked.

Often confused with Helictotrichon sempervirens
Fills a similar niche Festuca arvernensis Panicum virgatum 'Cloud Nine' x Heucherella

Full plant profile

Growing Conditions
Plant type
Ground Cover; Ornamental Grasses and Sedges
USDA zones
4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b
Light
Full sun (6 or more hours of direct sunlight a day) | Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Soil pH
Acid (<6.0); Alkaline (>8.0); Neutral (6.0-8.0)
Soil drainage
Good Drainage | Moist | Occasionally Dry
Available space
12 inches-3 feet
NC region
Coastal; Mountains; Piedmont
Mature size
Height: 0 ft. 9 in. - 1 ft. 0 in. | Width: 1 ft. 0 in. - 1 ft. 6 in.
Maintenance
Medium
Canopy layer
4 - Herbaceous (1-3 ft)
Form & Appearance
Habit / form
Clumping; Dense; Mounding
Texture
Fine
Foliage
Semi-evergreen
Leaf color
Blue; Green
Leaf type
Sheath
Leaf shape
Linear
Leaf feel
Glossy
Leaf value
Long-lasting; Showy
Leaf size
> 6 inches long, < 1 inch wide
Hairs present
No
Leaf detail
The leaves are linear, up to 10 inches long, finely-textured, upright, and radiate outward to form a dense clump
Flower color
Green; Purple/Lavender
Flower form
Insignificant; Panicle
Flower detail
The flowers are green and purple-tinted and present on terminal panicles. Blooms from June to July. Brown seed heads follow.
Bloom time
Summer
Fruit color
Brown/Copper
Fruit type
Caryopsis
Fruit detail
Brown seed heads follow the flowers. The seeds are self-sowing.
Wildlife & Ecology
Native status
Unknown
Origin
Northeast Spain to Northwest Italy
Distribution
Native: France, Italy, Spain, and Switzerland. Introduced: Canary Island, Colombia, Corsica, El Salvador, Great Britain, Ireland, Madeira, and Morocco
Wildlife value
Seed heads attract small birds.
Attracts
Butterflies
Food & Medicine
Fruit type
Caryopsis
Landscape Use
Landscape location
Container; Small Space; Walkways
Landscape theme
Butterfly Garden; Cottage Garden; Drought Tolerant Garden; Rock Garden
Design feature
Border; Foundation Planting
Garden tags
#ornamental grass #black walnut toxicity tolerant #rocky soils tolerant #dry soils tolerant #drought tolerant #groundcover #full sun #colorful leaves #urban conditions tolerant #clumping #walkway #accent #heat intolerant #humidity intolerant #wet soils intolerant #semi-evergreen #border #blue leaves
Problems & Resistance
Disease problems
Gray Snow Mold in Turf
Resistant to
Black Walnut; Drought; Dry Soil; Poor Soil; Urban Conditions
Propagation
Division; Seed

Planted at Hunnicutt

Nobody’s planted this one yet.