Invasive species
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Invasive species photo gallery

Spotted knapweed (Centaurea biebersteinii, Centaurea maculosa or Centaurea stoebe)

Click on a photo for an enlarged version or return to all non-native or native invasive plant species.

Photo by Kenneth Sytsma. Click for an enlarged version.

Photo by Kenneth Sytsma

 Photo by Kenneth Sytsma. Click for an enlarged version.

Photo by Kenneth Sytsma
Photo by Robert Bierman. Click for an enlarged version.

Photo by Robert Bierman

 Photo by Elizabeth J. Czarapata. Click for an enlarged version.

Photo by Elizabeth J. Czarapata
Photo by Elizabeth J. Czarapata. Click for an enlarged version.

Photo by Elizabeth J. Czarapata

 Photo by Elizabeth J. Czarapata. Click for an enlarged version.

Photo by Elizabeth J. Czarapata

Visit Wisconsin Vascular Plants [exit DNR], a Web site presented by the Wisconsin Herbarium, to view photos and learn more about these plant species, as well as the rest of Wisconsin's Flora.

Last revised: Thursday, October 28, 2021