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Weeds
Mayweed Chamomile
Mayweed Chamomile, Anthemis cotula L., is native to the Mediterranean region, but has been widely introduced as a weed in the temperate zones. In 1995, it could be found in almost all of the lower 48 states.
Additional Resources:
Publications
Photo courtesy of Larry Burrill.
Tools
Our latest weed decision tool.
Herbicide Resistance Weeds Map New
The Herbicide Resistance Weeds Map allows you to see county level results from Dr. Ian Burke’s herbicide resistance testing program at WSU.
Additional Weed Decision Tools
Dynamic decision tools to help you make informed management choices.
- Herbicide Comparison Tool
- AMS Sprayer Mix Calculator
- Herbicide Mechanisms of Action (MOA) Tools
- Winter Wheat Herbicide Efficacy Table
PNW Weed Management Handbook
This handbook is designed as a quick and ready reference for weed control practices and herbicides used in various cropping systems or sites in Idaho, Oregon, and Washington.
National Jointed Goatgrass Research Program
The National Jointed Goatgrass Research Program was initiated in 1994 by using a special USDA grant to fund regional research and extension activities directed toward limiting the damage caused by jointed goatgrass to winter wheat production in the western United States. View more information generated over the course of this 15-year program.
Additional Resources
Common Weeds List
Herbicide Resistance Testing Program
Weed ID Quiz