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

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

Leaves

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

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

Camelthorn flower

Root

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

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 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

Learn more about the author(s)

Martha Barajas

Heidi Kratsch

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Nevada Noxious Weed Field Guide – Camelthorn