roughstalk bluegrass USDA PLANTS Symbol: POTR2
U.S. Nativity: Exotic
Habit: Grass or Grasslike
Poa trivialis L.

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Taxonomic Rank: Liliopsida: Cyperales: Poaceae
Synonym(s): rough bluegrass
Native Range: Africa, temp & trop. Asia, Europe (GRIN);

Selected Images from Invasive.orgView All Images at

Flower(s); inflorescences.
Joseph M. DiTomaso, University of California - Davis,
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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.

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
Mid-Atlantic Exotic Pest Plant Council, 2005
Virginia Invasive Plant Species List