1. OSU Extension Catalog
Peer reviewed (Orange level)

Problem Thistles of Oregon

Ken French, Larry C. Burrill and Tim Butler
EC 1288 | Revised July 2021, Reviewed 2023

Summary

Describes thistles identified as problems. Includes color photos.

About the authors

Ken French
IWM specialist
Oregon Department of Agriculture
Larry C. Burrill
Extension weed specialist emeritus
Oregon State University
Tim Butler
Field operations manager
Oregon Department of Agriculture, Noxious Weed Control Program
pest detectors refer to their reference guide
Want to learn more about this topic? Explore more resources from OSU Extension: Integrated pest management, Weeds

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