Stem

  • Up to 3 ft. tall and branched with lengthwise ridges along stem
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Leaves

  • Cotyledons are oblong, fleshy and hairless, often with a purplish midvein; rosette leaves are oval to lance-shaped with smooth, toothed or lobed edges (margins)
  • Stem leaves are alternate and deeply pinnate-lobed; lower leaves are larger than upper leaves; edges are covered with short, stiff hairs
common crupina
Common crupina rosette

Flower

  • Pink or purple; occur in clusters of 1-5 at the tips of branches; base of flower is vase-shaped and narrow, 3 to 4 times longer than wide
Common crupina flower
Common crupina flower

Root

  • Fibrous
Photo of common crupina stem
Common crupina stem

Other

  • Grows well under a wide range of environmental and soil conditions; often found in rangeland, pastures, waste areas, roadsides and along waterways; no known occurences in Nevada
  • Annual; reproduces by seed;
  • Listed on the Federal Noxious Weed List
Photo of common crupina flowers
 

Control

  • Grazing or mowing can increase branching and seed production and are NOT effective
  • Apply 2,4-D, dicamba or picloram to actively growing plants prior to flowering; aminocyclopyrachlor, aminopyralid, chlorsulfuron, clopyralid or metsulfuron pre or post-emergence  
Blecker, L., Creech, E., Dick, J., Gephart, S., Hefner, M., Kratsch, H., Moe, A., Schultz, B. 2020, Nevada Noxious Weed Field Guide – Common crupina, Extension, University of Nevada, Reno, Field Guide

Learn more about the author(s)

 

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