Weed Pictures
- University of Massachusetts Extension
- ODA Noxious Weed Pictures
- Central Washington Native Plant Society
- British Columbia Weeds
- Google Image Search
- USDA Forest Service / University of Georgia
Weed Inspector Home
Weed Information
- Center for Invasive Plant Management
- ODA Noxious Weed Program
- NRCS National Plant Data Center
- USDA Invasive Species Information
- Montana War On Weeds, State of Montana
- White Top Consortium
- ODA Noxious Weed Mapper
- North American Invasive Species Management Association
- The Nature Conservancy Weed Management Site
- Cornell University, Weed Ecology Lab
Weed Inspector Home
Poisonous Plants
- Cornell University Poisonous Plants Database
- Colorado State University Poisonous Plants Database
- US Army Public Health Command
Weed Inspector Home
Plant ID & Taxonomy
Herbicide Information
- Crop Data Management Systems
- Dupont Chemical Co.
- BASF Chemical Co.
- DowAgroScience Chemical Co.
- Pesticide Product Labels and Information for nearly any pesticide made
- Monsanto Chemical Co.