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*Invasive Species*
Spotted Knapweed,
  Centurea biebersteinii syn. Centurea maculosa

Spotted Knapweed is a short-lived perennial or biennial that usually grows 2-3 feet tall. From July to September it produces pink to purple flowers that look similar to thistles. It infests sunny prairies, pastures and roadsides. It has a long taproot and is a native of Europe and Asia. Knapweed contains a toxin that kills the neighboring plant roots and can irritate some peoples skin. Protective covering should be worn when dealing with this weed.

   Spotted Knapweed   
Spotted Knapweed

Learn more at the Wisconsin DNR website: WDNR

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