Helpful invasive web sites
- University of Maine Cooperative Extension
- University of Maine Herbaria
- New England Wildflower Society
- Maine Department of Environmental Protection
- US Department of Agriculture
- Ohio State University
- The Nature Conservancy Wildland Invasive Species Team
- Environment Canada
- Maine Action Plan for Managing Invasives Aquatic Species
- Maine Department of Agriculture
- Connecticut Invasive Plant Working Group
- Invasive species profiles
- Invasive Plant Atlas of New England (IPANE)
- NRCS National Invasives Database
- Plant Conservation Alliance Fact Sheets
- Plant Conservation Alliance's Alien Plant Working Group
- The Nature Conservancy Photo Gallery of Invasive Plants
- Aquatic Nuisance Species Links
