Poison Hemlock
Conium maculatum
Poison hemlock is a county declared weed in Big Horn, Campbell, Converse, Lincoln, Platte, Sheridan and Teton counties in Wyoming.
Photo by Pedro Tenorio-Lezama, , Bugwood.org
Estimated Overall
Acres Maps Trends Maps
Contact Us
Cooperative Agricultural Pest Survey
Department of Ecosystem Science & Management
- 1000 E. University Ave
- Laramie, WY 82071
- Dept. 3354
- Email: caps@uwyo.edu
- Phone: (307) 766-5278
The University of Wyoming has earned its Research Level 1 (R1) status from the Carnegie Classification of Institutions of Higher Education, placing Wyoming's only four-year university with the top research universities in the United States.

