Horseweed

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Horseweed plants grow individually in turf, primarily favoring disturbed areas
Horseweed flowering stalk
Horseweed leaves
Horseweed seedheads


  • Scientific Name: Conyza canadensis (L.) Cronq.


  • Common Names: Horseweed (United States), Butterweed, Blood stanch, Canadese Fijnstraal, Canadian Fleabane, Canadian Horseweed, Cascade Fleabane, Coltstail, Fleawort, Fireweed, Hogweed, Horseweed fleabane, Kanaryaotu, Mare's tail, Marestail Butterweed, Mawi Pire Otu, Pride weed, Thwail Ath Theeb, Voaderia



  • Geographic Distribution: North America, South America, Europe



  • Photosynthetic Apparatus: C3


  • Major Identifying Characteristic: Rosette becoming erect with alternate lanceloate leaves. LEaves on erect plants are entirely sessile. Small yellowish flowers and puffball seedhead.
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