BLM National List of Invasive Weed Species of Concern - The United States Bureau of Land Management's list of invasive weed species of concern in regions where the agency has responsibilities (western United States).
California Exotic Pest Plant Council - Dedicated to finding solutions to problems caused by non-native pest plant invasions of the state's natural areas.
Ecological Monitoring and Assessment Network - Discusses the need for monitoring, role of naturalists, use of research collections, research methods, and species identification. Article is by Erich Haber.
Environmental Weeds at Bream Head - A study of environmental weeds found on the coastal fringe of Bream Head and in private gardens at Ocean Beach and Urquharts Bay, Northland, New Zealand.
Florida Exotic Pest Plant Council - Includes information on invasive exotic species, database, proposed research and educational programs, control guides and management plans, mailing list, membership information, and links.
Georgia Exotic Pest Plant Council - Information about the adverse effects exotic pest plants have on the diversity plants and animals native to Georgia, USA.
Hawaiian Alien Plant Studies, UH Botany - A forum to promote public awareness and exchange of information regarding problems associated with the spread of alien plant species.
Hawaii's Most Invasive Horticultural Plants - Overview of the problem, list of invasive garden plants, and species accounts from the Hawaii Division of Forestry and Wildlife.
How to Prevent the Spread of Noxious Weeds - Controlling weeds poses a special dilemma because, once a weed infestation is identified, it is often already so large that containment is difficult and expensive.
Idaho Weed Summit - The Spread of Invasive Weeds in Western Wildlands.
Invasive Grass Species In Southern Africa - Invasiveness of a perennial soil pathogen-sensitive grass (Ammophila arenaria) and an annual grass (Cenchrus biflorus) in Southern Africa are studied in relation to soil pathogens, mycorrhizal fungi and genetic structure.
Invasive Plant Atlas of New England - Database of invasive and potentially-invasive plants in the region with management guide and calendar of events.
The Invasive Plant Council of New York State - A not-for-profit organization that provides guidance on the management of invasive plants with the goal of protecting biodiversity in New York (USA).
Invasive Plants - Information from the Canadian Botanical Conservation Network. Includes species list, facts about economic costs, and bibliography.
Invasive Species - USGS Biological resources that deal with invasive plant species.
Invasive Weeds - Photos and descriptions of invasive, noxious, and troublesome plants of North Dakota. Includes articles and weed control guide.
Invasive Woody Plants in the Tropics Research Group - Global review of invasions resulting in a comprehensive database, an analysis of common characteristics and recommendations for management and control.
Mid-Atlantic Exotic Pest Plant Council - Addresses the problem of invasive exotic plants in the Mid-Atlantic region of the US. Brochure, e-mail group, organizational information, and links.
Pacific Island Ecosystems at Risk - Listings and descriptions of invasive plant species which threaten Pacific island ecosystems, particularly those of Micronesia and American Samoa.
Plant Conservation Alliance - Alien Plant Working Group - is a web-based project of the PCA that provides information for the general public, land managers, researchers, and others on the serious threat and impacts of invasive alien (exotic, non-native) plants to the native flora, fauna, and natural ecosystems of the United States.
Southeastern Exotic Pest Plant Council - Information about exotic plants invading natural areas in the southeastern states, controlling invasive plants, and landscaping with native plants.
TNC Wildland Weeds Management & Research - The Nature Conservancy's U.S. program for dealing with harmful invasive plant species threatening wild land biodiversity and invading TNC preserves. Site has weed alerts and resources on weed control.
