Quercus

Quackgrass

Elymus repens

Not native to Kentucky

Do not plant. Listed invasive in Kentucky.

Plant this instead

Choose your county to list local plants first.

  • Canada Wild-rye
    Elymus canadensis

    Similar growth form, height, evergreen or deciduous

    Different: bloom season

  • Virginia Wild-rye
    Elymus virginicus

    Similar growth form, height, evergreen or deciduous

    Different: bloom season

  • Broomsedge
    Andropogon virginicus

    Similar growth form, height, evergreen or deciduous

More natives for your garden

Check a whole list of plants

Ecological relationships

Who uses this plant?

23CaterpillarsGenus host records with ranges including KY

Genus host records with ranges including KY · Elymus

  • Amblyscirtes vialisCommon Roadside-Skipper, Black Little Skipper
  • Ancyloxypha numitorLeast Skipper
  • Apamea devastatorGlassy Borer, Glassy Cutworm Moth
  • Apamea lignicoloraWood-Colored Apamea
  • Cercyonis pegalaCommon Wood Nymph
  • Clepsis persicanaWhite Triangle Tortrix
  • Dargida diffusaWheat Head Armywotm Moth
  • Helcystogramma hystricellaLanceolate Helcystogramma, Lanceolate Moth
  • Lethe anthedonNorthern Pearly Eye
  • Leucania commoidesDusky Wainscot, Comma Wainscot
Show all 23
  • Leucania multilineaMany-Lined Wainscot
  • Leucania phragmitidicolaNeedle Wainscot, Phragmites Wainscot
  • Leucania pseudargyriaFalse Wainscot
  • Lon zabulonZabulon Skipper
  • Loscopia velataVeiled Ear Moth, Veiled Grass Moth
  • Mythimna unipunctaArmyworm Moth, White Speck
  • Nephelodes miniansBronzed Cutworm
  • Papaipema cataphractaBurdock Border, Potato-Stalk Borer
  • Papaipema nebrisStalk Borer
  • Polites themistoclesTawny-Edged Skipper
  • Pyrrharctia isabellaIsabella Tiger Moth, Banded Woolybear
  • Spodoptera frugiperdaFall Armyworm Moth
  • Elachista illectella
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
—BeesSoutheastern regional records
—Specialist beesPollen specialists
4BirdsRecorded genus food-resource interactions; not a state feeding claim

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

  • Alectoris chukarChukar
  • Anser albifronsGreater White-fronted Goose
  • Perdix perdixGray Partridge
  • Plectrophenax nivalisSnow Bunting
Hurlbert, Olsen, Sawyer & Winner 2021, Avian Diet Database, Scientific Data 8: 260 (CC0)
Growing and identification

Plant details

Family
Poaceae
Flower color
Yellow
Growth rate
Rapid
Growth habit
Spreads by rhizomes
Foliage color
Green
Fruit begins
Spring
Fruit ends
Summer

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

Growing sources and scope
  • Bloom · “Mid spring” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
  • Flower color · “Yellow” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
  • Foliage color · “Green” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
  • Fruit begins · “Spring” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
  • Fruit ends · “Summer” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
  • Growth habit · “Spreads by rhizomes” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
  • Growth rate · “Rapid” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
  • Height · “About 2.6 feet” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
  • Light · “Partial shade; Full sun (documented habitat)” · FloraQuest: Carolinas, Georgia (Southeastern Flora Team) · Carolinas and Georgia
  • Soil · “Dry; Moist (documented habitat)” · FloraQuest: Carolinas, Georgia (Southeastern Flora Team) · Carolinas and Georgia
Also known as

Agropyron repens; Quack Grass

Conservation status

Kentucky rankSNA
Global rankGNR
KY statusNot verified
Federal statusNot verified

Conservation source Global and federal source

Sources