Invasive Plants Identification Guide

A guide to identifying and learning about the most challenging invasive plants of the Mid Klamath area.

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Plumeless Thistle
Carduus acanthoides
 
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Italian thistle
Carduus pycnocephalus
 
   

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Meadow knapweed
Centaurea jacea nothossp. pratensis
 
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Spotted knapweed
Centaurea maculosa
 
   
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Canada thistle
Cirsium arvense
 
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Leafy spurge
Euphorbia esula
 
   
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Oblong spurge
Euphorbia oblongata
 
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Perennial Pepperweed
Lepidium latifolium
 
   

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Puncturevine
Tribulus terrestris
 
   
     

 

Additional Information on Identifying Invasive Plants

California Invasive Plant Council's Plant Profiles

California Department of Food & Agriculture's Encycloweedia