redtop USDA PLANTS Symbol: AGGI2
U.S. Nativity: Exotic
Habit: Grass or Grasslike
Agrostis gigantea Roth

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Taxonomic Rank: Liliopsida: Cyperales: Poaceae
Native Range: Eurasia (BAIL);

Identification, Biology, Control and Management Resources

Selected Images from Invasive.orgView All Images at

Plant(s); whole plant with inflorescences
Dave Powell, USDA Forest Service (retired),
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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

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:
Colonial National Historical Park (Virginia)

Invasive Listing Sources:
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