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Wavy Hairgrass

Avenella flexuosa

Found in grassy balds, high elevation rocky summits, rocky or sandy woodlands. Weakley, Flora of the Southeastern United States (2025), Northern Tier edition What its natural habitat tells you

19
Modest

Native to West Virginia. How scores work Is it native here?

Profile 88%

Height
Up to about 32 inches
Spread
1–2 feet
Light
Partial shade, Full sun
Soil moisture
Dry to moist

Space about 1.5 ft apart from its recorded spread, about 44 per 100 sq ft. Enter your bed size for a count

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At a glance

Life cycle
Perennial
Bloom
April to August

Not yet recorded · Leaves

Recorded in 4 West Virginia counties.

Natural habitats

Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.

1 of 2

Mountain balds

Treeless grassy or shrubby summits and ridges in the high mountains.

Cliffs, ledges and rocky summits

Cliffs, ledges, rock outcrops, talus and rocky summits where the source does not name the rock. A named rock files the place under its own glade or outcrop type instead.

All habitats

Also found with this plant

Wildlife whose habitat models include habitats this plant grows in, in West Virginia. Shared habitat, not food. 159 animals.

All wildlife of West Virginia

Ecological relationships

Who uses this plant?

What these records mean

1CaterpillarsGenus host records with ranges including WV

Genus host records with ranges including WV · Deschampsia

  • Apamea sordensBordered Apamea, Rustic Shoulder-Knot
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
0BeesSoutheastern regional records
0Specialist beesPollen specialists
3BirdsRecorded genus food-resource interactions; not a state feeding claim

Recorded genus food-resource interactions; not a state feeding claim · Deschampsia

  • Pooecetes gramineusVesper Sparrow
  • Spizella passerinaChipping Sparrow
  • Spizella pusillaField Sparrow
Hurlbert, Olsen, Sawyer & Winner 2021, Avian Diet Database, Scientific Data 8: 260 (CC0)

Direct food only: birds recorded eating this genus across North America. Caterpillars on host plants also feed nesting birds. NC Native Plant Society: butterfly gardening

No records yet · Ants · Beetles · Flies · Adult butterflies / moths · Other wasps · Other insects

Growing and identification

Plant details

Family
Poaceae
Hardiness
Zones 4–7
Flower color
Yellow

Safety has not been reviewed for this plant; check toxicity and thorns before planting.

Growing sources and scope
Also known as

Deschampsia flexuosa; Hair Grass; hairgrass

Conservation status

West Virginia rankS4
Global rankG5
WV statusNot verified
Federal statusNot verified

Conservation source Global and federal source

In your garden

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Sources