orchardgrass USDA PLANTS Symbol: DAGL
U.S. Nativity: Exotic
Habit: Grass or Grasslike
Dactylis glomerata L.

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Taxonomic Rank: Liliopsida: Cyperales: Poaceae
Synonym(s): cocksfoot, orchard grass
Native Range: Eurasia (BAIL);

Orchardgrass is a cool-season perennial that grows 1.4-4 ft. (0.5-1.3 m) tall. Leaves are 4-16 in. (10-40 cm) long and 0.1-0.5 in. (0.2-1.1 cm) wide with a bluish hue. The flowers occur in a panicle with spikelets in a compact cluster on one side of the rachilla. Orchardgrass is native to Europe and was first introduced to the United States in the late 1700s. It prefers areas that are well-drained with moderately fertile to rich soils.

Selected Images from Invasive.orgView All Images at Invasive.org


Stand; extreme grass competition in an old harvest unit at Glenn Ridge, Walla Walla District
Dave Powell, USDA Forest Service, Bugwood.org
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Plant(s);
Steve Dewey, Utah State University, Bugwood.org
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Flower(s);
Steve Dewey, Utah State University, Bugwood.org
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Flower(s);
Catherine Herms, The Ohio State University, Bugwood.org
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Fruit(s);
Lynn Sosnoskie, University of Georgia, Bugwood.org
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Flower(s); inflorescence.
Joseph M. DiTomaso, University of California - Davis, Bugwood.org
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EDDMapS Distribution:
This map is incomplete and is based only on current site and county level reports made by experts and records obtained from USDA Plants Database. For more information, visit www.eddmaps.org
 


State(s) Where Reported invasive.
Based on state level agency and organization lists of invasive plants from WeedUS database.

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U.S. National Parks where reported invasive:
Antietam National Battlefield (Maryland)
Appomattox Court House National Historical Park (Virginia)
Badlands National Park (South Dakota)
Colonial National Historical Park (Virginia)
Fredericksburg & Spotsylvania National Military Park (Virginia)
George Washington Birthplace National Monument (Virginia)
Haleakala National Park (Hawaii)
Petersburg National Battlefield (Virginia)
Rocky Mountains National Park (Colorado)
Thomas Stone National Historic Site (Maryland)



Invasive Listing Sources:
California Invasive Plant Council
City of Ann Arbor Michigan Parks and Recreation
Faith Campbell, 1998
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
Native Plant Society of Oregon, 2008
Pacific Northwest Exotic Pest Plant Council, 1998
University of Hawaii, Botany Department, Hawaiian Alien Plant Studies, 1998
Virginia Department of Conservation and Recreation, 2009