| quackgrass |
USDA PLANTS Symbol: ELRE4 USDA ARS GRIN: 102069 ITIS: 512839 |
| Elymus repens (L.) Gould | |
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Taxonomic Rank: Liliopsida: Cyperales: Poaceae |
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Quackgrass is a perennial, cool-season, rhizomatous grass. The stems are green to whitish, erect to decumbent and can grow to 3 ft (0.9 m) tall. The leaves are 6-15.7 in. (15-40 cm) long and usually have a pair of prominent auricles at the base. Flowering occurs in May to September. The flower spikes are 3.9-11.8 in. (10-30 cm) long and have 3-8 florets per spikelet. Quackgrass is native to Europe and occurs in pastures, gardens, roadsides, and other disturbed open areas. |
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Identification, Biology, Control and Management Resources
- Weed of the Week - USDA Forest Service
- Federal Noxious Weed Disseminules of the U.S. - USDA-APHIS
- Element Stewardship Abstract - The Nature Conservancy
| Selected Images from Invasive.org | View All Images at Invasive.org |
 Plant(s); Steve Dewey, Utah State University, Bugwood.org Additional Resolutions & Image Usage |
 Plant(s); Steve Dewey, Utah State University, Bugwood.org Additional Resolutions & Image Usage |
 Feature(s); Leaf collar region Steve Dewey, Utah State University, Bugwood.org Additional Resolutions & Image Usage |
 Feature(s); Roots Steve Dewey, Utah State University, Bugwood.org Additional Resolutions & Image Usage |
 Flower(s); Richard Old, XID Services, Inc., Bugwood.org Additional Resolutions & Image Usage |
 Fruit(s); infructescence Dr. Lynn Clark and Anna Gardner, Iowa State University, Bugwood.org Additional Resolutions & Image Usage |
 Fruit(s); Dr. Lynn Clark and Anna Gardner, Iowa State University, Bugwood.org Additional Resolutions & Image Usage |
 Feature(s); Florets in ventral view (left) and dorsal view (far right) Julia Scher, USDA APHIS PPQ, Bugwood.org Additional Resolutions & Image Usage |
 Plant(s); Steve Dewey, Utah State University, Bugwood.org Additional Resolutions & Image Usage |
 Plant(s); Elizabeth Bella, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage |
 Infestation; Steve Dewey, Utah State University, Bugwood.org Additional Resolutions & Image Usage |
 Diagram or Graphic; USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. USDA PLANTS Database, USDA NRCS PLANTS Database, Bugwood.org Additional Resolutions & Image Usage |
 Diagram or Graphic; Hitchcock, A.S. (rev. A. Chase). 1950. Manual of the grasses of the United States. USDA Misc. Publ. No. 200. Washington, DC. USDA PLANTS Database, USDA NRCS PLANTS Database, Bugwood.org Additional Resolutions & Image Usage |
 Diagram or Graphic; Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 1: 283. USDA PLANTS Database, USDA NRCS PLANTS Database, Bugwood.org Additional Resolutions & Image Usage |
Taxonomic References:
- USDA, NRCS. 2001. The PLANTS Database, Version 3.1, National Plant Data Center, Baton Rouge, LA 70874-4490 USA.
Invasive Listing Sources:
- City of Ann Arbor Michigan Parks and Recreation
- Faith Campbell, 1998. Plants that Hog the Garden: Invasive Plants in the United States. Fine Gardening Online
- Hoffman, R. & K. Kearns, Eds. 1997. Wisconsin manual of control recommendations for ecologically invasive plants. Wisconsin Dept. Natural Resources, Bureau of Endangered Resources. Madison, Wisconsin. 102pp.
- Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
- John Randall, The Nature Conservancy, Survey of TNC Preserves, 1995.
- Mid-Atlantic Exotic Pest Plant Council, 2005
- Nonnative Invasive Species in Southern Forest and Grassland Ecosystems
- Pacific Northwest Exotic Pest Plant Council, 1998
- Virginia Department of Conservation and Recreation, 1999.
- WeedUS - Database of Plants Invading Natural Areas in the United States
- Alaska Noxious Weeds
- Arizona Noxious Weeds
- California Noxious Weeds
- Colorado Noxious Weeds
- Iowa Noxious Weeds
- Kansas Noxious Weeds
- Michigan Noxious Weeds
- Oregon Noxious Weeds
- Utah Noxious Weeds
- Wyoming Noxious Weeds
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