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Blue Oat Grass

Helictotrichon sempervirens, Poaceae

Zones
4–9
Layer
Ground Cover
Lifespan
Perennial
Growth
Slow

Guild Roles

Ground CoverMulch Maker

Growing Conditions

Sun

Full Sun (preferred)Partial Shade (tolerated)

Water

Low (established)Moderate (seedling)

Soil pH

6.5 – 8

Tolerances

Drought
Frost
Heat
Pest Resistance
Disease Resist.

Companion Plants

Yellow AsphodelAsphodeline lutea
Wind ProtectionBeneficial Insect Habitat
Black BroomCytisus nigricans
Nitrogen FixationWind Protection
Blue Moor GrassSesleria caerulea
Pollinator SharingWind Protection

Antagonistic Plants

Wild Service TreeSorbus torminalis

Tree canopy creates dense shade that inhibits grass growth, plus leaf litter allelopathy

Mountain CrowberryEmpetrum hermaphroditum

Empetrum produces phenolic compounds in leaf litter that inhibit grass establishment

Uses

Functions

Erosion ControlOrnamental GrassWildlife Habitat

Edible Parts

Seeds

Common Questions

What zones does Blue Oat Grass grow in?

Blue Oat Grass grows in USDA hardiness zones 4 through 9.

What are good companion plants for Blue Oat Grass?

Good companions for Blue Oat Grass include Yellow Asphodel, Black Broom, Blue Moor Grass.

Design guilds with Blue Oat Grass and see companion relationships visually.

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