spotted knapweed blooming crop field wisconsin |
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| navigate by keyword : purple wildflowers blooming invasive plants agriculture colorful wild flowers beautiful nature landscape pasture meadow wisconsin north america crop field noxious weed centaurae stoebe spotted knapweed plant |
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| Spotted knapweed plants (Centaurea stoebe) growing in a corn field in rural Wisconsin. Purple knapweed wild flowers are beautiful, but knapweed is a harmful noxious weed, an invasive plant that crowds out native grasses in pastures, fields, and meadows across North America. |
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