Canada Thistle (Cirsium arvense) Identification and Control

Authors

Caitlin Henderson
Robert Nelson Schaeffer, Utah State UniversityFollow
Corey Ransom, Utah State UniversityFollow

Document Type

Factsheet

Publisher

Utah State University Extension

Publication Date

3-25-2025

First Page

1

Last Page

6

Abstract

Cirsium arvense is an invasive perennial weed adaptable to a wide range of habitats. Since its arrival in North America in the 1600s, it has spread throughout much of the country. It has become prevalent in rangelands and disturbed areas in the Intermountain West, displacing native plant species, reducing crop yields, and affecting pasture quality. This fact sheet outlines how to identify Canada thistle, its life cycle, and how to manage it through cultural, mechanical, biological, and chemical control.

Recommended Citation

Henderson, C., Schaeffer, R., & Ransom, C. (2025). Canada thistle (Cirsium arvense) Identification and Control [Fact sheet]. Utah State University Extension.