knapweeds USDA PLANTS Symbol: CENTA
U.S. Nativity:
Habit: Forbs/Herbs
Centaurea spp. L.

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Taxonomic Rank: Magnoliopsida: Asterales: Asteraceae

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


Plant(s);
USDA APHIS PPQ Archive, USDA APHIS PPQ, Bugwood.org
Additional Resolutions & Image Usage

Foliage;
Mary Ellen (Mel) Harte, , Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
David Cappaert, Michigan State University, Bugwood.org
Additional Resolutions & Image Usage

Flower(s); Left - Spotted, Top - Diffuse, and Right - Russian knapweeds
Steve Dewey, Utah State University, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
University of Idaho Archive, University of Idaho, Bugwood.org
Additional Resolutions & Image Usage

Flower(s); L-R Russian, Spotted, Diffuse, and Squarrose knapweed
Steve Dewey, Utah State University, Bugwood.org
Additional Resolutions & Image Usage

Flower(s); L-R Spotted, Diffuse, and Squarrose knapweeds
Steve Dewey, Utah State University, Bugwood.org
Additional Resolutions & Image Usage

Infestation; completely took over 80 acres in 4 years
Vince Belleci, , Bugwood.org
Additional Resolutions & Image Usage

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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Invasive Listing Sources:
Native Plant Society of Oregon, 2008