Information about parasitoids, predators, pathogens and weed feeders. BLM state weed pages, April 1998 National Weed Symposium and Environmental Education about invasive weeds California Exotic Pest Plant Council Colorado State University Cooperative Extension Program publications on weed control - Canada thistle, knapweed, spurge and others. Available as Adobe Acrobat PDF formated documents. Colorado Weed Management Association Information about the association, electronic newsletter and calendar of events. Cooperative Agriculture Pest Survey and National Agricultural Pest Information System have Pest and Biocontrol Information for selected weed species including diffuse knapweed, purple loosestrife, spotted knapweed, leafy spurge, small broomrape, tropical soda apple, and witchweed.
Information includes fact sheets, distribution maps, and releases of biocontrol agents.
Centre for Pest Information Technology and Transfer in Australia. Information about the program, pest management software, literature and more. Environmental Weeds Home Page in Australia Florida Cooperative Extension Service provides publications on beneficial insects, insect control, aquatic weeds, nematode control, weed guide and other related topics. Greener Roadsides Quarterly newsletter of the Federal Highway Administration promoting control of invasive species and use of native species along roadsides. Information Network provided by the National Biological Information Infrastructure Invasive Species Information provided by the Fish and Wildlife Service Invasive Species Specialist Group of the Species Survival Commission of the International Union for the Conservation of Nature .