 Virginia Tech Weed Identification Guide - http://www.ppws.vt.edu/weedindex.htm Images and descriptions of many species of terrestrial and aquatic weeds in Virginia. |
 International Survey of Herbicide Resistant Weeds - http://www.weedscience.com Information about weeds and their identification, control and herbicide resistance. A global collaborative effort. |
 Weeds Australia - http://www.weeds.org.au/ Australian Weeds Committee site promoting key weed policies, regulations, current issues, national initiatives, research, extension training and personnel. |
 National Weeds Strategy - Weeds of National Significance - http://www.weeds.org.au/natsig.htm Australian site promoting key weed policies, regulations, current issues, national initiatives, research, extension training and personnel. |
 New Jersey Agricultural Weed Gallery - http://njaes.rutgers.edu/weeds/ Includes brief details, and photographs of the important weeds of NE United States. |
 Weed Science Society of America - http://www.wssa.net/WSSA/Jobs/ Publishers of Weed Technology, which includes original research on weed biology and control, weed and crop management systems and reports of new problems. |
 Integrated Weed Control - http://www.integratedweedcontrol.com/index.htm Biological products and consulting services for weed management. Montana. |
 Flame Weeding for Agronomic Crops - http://attra.ncat.org/attra-pub/flameweed.html Article discussing the use of flame weeders to control weeds before or after germination of the crop. |
 Principles of Sustainable Weed Management for Croplands - http://attra.ncat.org/attra-pub/weed.html Article discussing several alternatives to conventional tillage systems, including allelopathy, intercropping, crop rotations and a weed-free cropping design. |
 Weeds Management - http://www.agric.nsw.gov.au/reader/weeds Information on Australian weeds with guides to identification and control. |
 Weed Definitions and FAQs - http://www.dpi.nsw.gov.au/agriculture/pests-weeds/weeds/definition Information from the NSW Department of Primary Industries in Australia on weeds classed as noxious that need to be eliminated, those that threaten the environment and agricultural weeds. |
 Weed Management for Developing Countries - http://www.fao.org/DOCREP/006/Y5031E/Y5031E00.HTM Information from the FAO on improved weed management, problem weeds in crop and non-crop situations and management options and perspectives. |
 Procedures for Weed Risk Assessment - ftp://ftp.fao.org/docrep/fao/009/y5885e/y5885e00.pdf Information from the FAO on what should be done prior to the importation of plants to evaluate the likelihood of them becoming nuisance weeds. |
 Management of Problematic Aquatic Weeds in Africa - http://www.fao.org/DOCREP/006/Y4270E/Y4270E00.HTM Information from the FAO on this subject with particular reference to water hyacinth, water lettuce and water fern. |
 Environmental Weeds in Australia - http://www.anbg.gov.au/weeds/weeds.html Brief introduction to some major environmental weeds in Australia, with photos. |
 Weeds Society of Western Australia - http://members.iinet.net.au/~weeds/ Includes scientists, consultants, company representatives, conservationists, other practitioners and members of the public who have an interest in weed management |
 Environmental Weeds Action Network (EWAN) - http://members.iinet.net.au/~ewan/ A community initiative to tackle the problem of environmental weeds in bushland and waterways in Australia. |
 Pacific North West Weed Management Handbook - http://weeds.ippc.orst.edu/pnw/weeds Information on dealing with weeds found in this region including a weed identification image collection. |
 Identification of Vine Weeds in Florida Citrus - http://edis.ifas.ufl.edu/HS185 Photographs and identifying features of the commonly occurring climbing weeds. |
 UNL Weedscience - http://weedscience.unl.edu/ This University of Nebraska program conducts research into herbicides and weed types. Page includes list of publications and news. |
 Noxious Weeds in the US and Canada - http://invader.dbs.umt.edu/Noxious_Weeds/ Searchable database of the noxious weed lists for all U.S. states and six southern provinces of Canada. |
 International Parthenium Research News Group - http://www.iprng.org/ Resources on this noxious weed for scientists and researchers. Includes a news group, picture gallery, scientists directory, references and links. |
 Iowa State Weed Science - http://www.weeds.iastate.edu/ Detailed information and articles covering all aspects of agricultural weed science. |
 King County Noxious Weed List - http://dnr.metrokc.gov/wlr/lands/weeds/weedid.htm Weed identification in Washington State, USA. |
 Weed Identification - http://web.aces.uiuc.edu/weedid/ Key and species accounts for 172 species from the University of Illinois. |
 Weed Research and Information Center - http://wric.ucdavis.edu/ An interdisciplinary collaboration that fosters research in Weed Management and facilitates distribution of associated knowledge for the benefit of agriculture and for the preservation of natural resources. |
 California Noxious Weed Control Projects Inventory - http://endeavor.des.ucdavis.edu/weeds/ A combined government/private/non-profit endeavour to establish a database, accessible through the Internet, containing information on noxious weed control in California. |
 A Review of Non-Chemical Weed Management - http://www.gardenorganic.org.uk/organicweeds/downloads/updated_review.pdf Organic farmers cite weed control as the most significant problem they encounter. This article discusses possible solutions in depth. |
 Amenity Weed Identification - http://www.bayer-escience.co.uk/amenity_weeds.htm Photographs of weed species commonly found in the UK and information on herbicides from Bayer Environmental Science. |
 Turf Weed Identification - http://www.bayer-escience.co.uk/turf_weeds.htm Photographs of weed species that may invade grassland and information on herbicides from Bayer Environmental Science. |
 HDRA Organic Weed Management - http://www.gardenorganic.org.uk/organicweeds/ This project aims to be a primary resource on weed management for organic farms, reporting on the latest weed information, weeding techniques and weed research. |