Stem

  • Highly branched with lengthwise ridges, 1.5-4 ft. tall and lacks hair (glabrous); spines 0.5-1.5 in. long with yellow tips arise from leaf axils
Camelthorn
 

Leaves

  • Alternate, simple, narrow to oblong and 0.25-0.75 in. long; hairs on lower surface only
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Flower

  • Pea-like; 0.3-0.4 in. long with pink to purple petals; 2-8 flowers occur alternately along short, spine-tipped branches
  • Seed pods are reddish-brown, 0.5-1.25 in. long, often curved, tipped with a small spine and contain 5-8 seeds; pods are deeply indented between seeds
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Camelthorn flower

Root

  • Woody, deep, spreading root system; roots often associate with nitrogen-fixing bacteria
Camelthorn pods
Camelthorn pods

Other

  • Grows best in areas where it can access additional water during the growing season; often found in field borders, roadsides and along waterways; known to occur in Clark and Humboldt counties 
  • Perennial; reproduces mostly by roots but sometimes seed
Camelthorn
Camelthorn plant

Control

  • Hand removal of individual plants (including roots) can limit spread of small infestations; grazing, mechanical removal  and burning  are NOT effective
  • Apply 2,4-D or dicamba post emergence; aminopyralid, imazapr, metsulfuron or picloram 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 – Camelthorn, Extension, University of Nevada, Reno, Field Guide

Learn more about the author(s)

 

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Integrated Pest Management

Integrated Pest Management program is a long-term management strategy that uses a combination of tactics to reduce pests to tolerable levels with potentially lower costs for the pest manager and minimal effect on the environment.