Knapweed, Squarrose

Regulated Act: Alberta Weed Control Act

Provincial Designation: Prohibited Noxious

Colour: Pink

Latin Name: Centaurea virgata Lam. ssp. Squarrosa

Fact Sheet1: Click Here to View/Download PDF

A close up of the flower and stem of a plant.

Knapweed, squarrose Photo Credit Cindy Roche, Bugwood.org

A plant with long, thin stems and leaves.

Knapweed, squarrose Photo Credit Joseph M. DiTomaso, University of California - Davis, Bugwood.org(1)

A plant growing in the dirt with leaves.

Knapweed, squarrose Photo Credit Joseph M. DiTomaso, University of California - Davis, Bugwood.org

A close up of some plants growing in the dirt

Knapweed, squarrose Photo Credit Steve Dewey, Utah State University, Bugwood.org

A field of purple flowers in the grass.

Knapweed, squarrose Photo Credit USDA ARS , USDA Agricultural Research Service, Bugwood.org

A close up of some flowers with the text " knapweed, squarrose ".