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Field Guide for the Biological Control of Weeds in the Northwest

Resource Category: 
Secondary Weeds
This field guide focuses on the most problematic weeds in northwestern North 
America for which there are at least some biocontrol agents established. Multiple 
photos and descriptions of each weed included in this guide emphasize key 
identification traits and plant ecology. Comparison tables are included to further 
aid in identification of related weed species, where applicable. For each weed 
included in this guide, all biocontrol agents currently found in North America are 
described individually.

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