A Review of Non-Chemical Weed Management
   Organic farmers cite weed control as the most significant problem they encounter. This article discusses possible solutions in depth.
   http://www.gardenorganic.org.uk/organicweeds/downloads/updated_review.pdf

Amenity Weed Identification
   Photographs of weed species commonly found in the UK and information on herbicides from Bayer Environmental Science.
   http://www.bayer-escience.co.uk/amenity_weeds.htm

California Noxious Weed Control Projects Inventory
   A combined government/private/non-profit endeavour to establish a database, accessible through the Internet, containing information on noxious weed control in California.
   http://endeavor.des.ucdavis.edu/weeds/

Environmental Weeds Action Network (EWAN)
   A community initiative to tackle the problem of environmental weeds in bushland and waterways in Australia.
   http://members.iinet.net.au/~ewan/

Environmental Weeds in Australia
   Brief introduction to some major environmental weeds in Australia, with photos.
   http://www.anbg.gov.au/weeds/weeds.html

Flame Weeding for Agronomic Crops
   Article discussing the use of flame weeders to control weeds before or after germination of the crop.
   http://attra.ncat.org/attra-pub/flameweed.html

HDRA Organic Weed Management
   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.
   http://www.gardenorganic.org.uk/organicweeds/

Identification of Vine Weeds in Florida Citrus
   Photographs and identifying features of the commonly occurring climbing weeds.
   http://edis.ifas.ufl.edu/HS185

Integrated Weed Control
   Biological products and consulting services for weed management. Montana.
   http://www.integratedweedcontrol.com/index.htm

International Parthenium Research News Group
   Resources on this noxious weed for scientists and researchers. Includes a news group, picture gallery, scientists directory, references and links.
   http://www.iprng.org/

International Survey of Herbicide Resistant Weeds
   Information about weeds and their identification, control and herbicide resistance. A global collaborative effort.
   http://www.weedscience.com

Iowa State Weed Science
   Detailed information and articles covering all aspects of agricultural weed science.
   http://www.weeds.iastate.edu/

King County Noxious Weed List
   Weed identification in Washington State, USA.
   http://dnr.metrokc.gov/wlr/lands/weeds/weedid.htm

Management of Problematic Aquatic Weeds in Africa
   Comprehensive information from the FAO on this subject with particular reference to water hyacinth, water lettuce and water fern.
   http://www.fao.org/DOCREP/006/Y4270E/Y4270E00.HTM

National Weeds Strategy - Weeds of National Significance
   Australian site promoting key weed policies, regulations, current issues, national initiatives, research, extension training and personnel.
   http://www.weeds.org.au/natsig.htm

New Jersey Agricultural Weed Gallery
   Includes brief details, and photographs of the important weeds of NE United States.
   http://njaes.rutgers.edu/weeds/

Noxious Weeds in the US and Canada
   Searchable database of the noxious weed lists for all U.S. states and six southern provinces of Canada.
   http://invader.dbs.umt.edu/Noxious_Weeds/

Pacific North West Weed Management Handbook
   Information on dealing with weeds found in this region including a weed identification image collection.
   http://weeds.ippc.orst.edu/pnw/weeds

Principles of Sustainable Weed Management for Croplands
   Article discussing several alternatives to conventional tillage systems, including allelopathy, intercropping, crop rotations and a weed-free cropping design.
   http://attra.ncat.org/attra-pub/weed.html

Procedures for Weed Risk Assessment
   Information from the FAO on what should be done prior to the importation of plants to evaluate the likelihood of them becoming nuisance weeds.
   ftp://ftp.fao.org/docrep/fao/009/y5885e/y5885e00.pdf

Turf Weed Identification
   Photographs of weed species that may invade grassland and information on herbicides from Bayer Environmental Science.
   http://www.bayer-escience.co.uk/turf_weeds.htm

UNL Weedscience
   This University of Nebraska program conducts research into herbicides and weed types. Page includes list of publications and news.
   http://weedscience.unl.edu/

Virginia Tech Weed Identification Guide
   Images and descriptions of many species of terrestrial and aquatic weeds in Virginia.
   http://www.ppws.vt.edu/weedindex.htm

Weed Identification
   Key and species accounts for 172 species from the University of Illinois.
   http://web.aces.uiuc.edu/weedid/

Weed Management for Developing Countries
   Comprehensive information from the FAO on improved weed management, problem weeds in crop and non-crop situations and management options and perspectives.
   http://www.fao.org/DOCREP/006/Y5031E/Y5031E00.HTM

Weed Research and Information Center
   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.
   http://wric.ucdavis.edu/

Weed Science Society of America
   Publishers of Weed Technology, which includes original research on weed biology and control, weed and crop management systems and reports of new problems.
   http://www.wssa.net/WSSA/Jobs/

Weeds Management
   Comprehensive information on Australian weeds with guides to identification and control.
   http://www.agric.nsw.gov.au/reader/weeds

Weeds Society of Western Australia
   Includes scientists, consultants, company representatives, conservationists, other practitioners and members of the public who have an interest in weed management
   http://members.iinet.net.au/~weeds/