Där Ogräs
Nordamerika | Weed Science Society of America (2010) - Composite List of Weeds |
Europa | NOBANIS - European Network on Invasive Alien Species |
Förenade Kungariket & Irland | Garden Organic |
Östasien | T. Mito & T. Uesugi (2004) - Invasive Alien Species in Japan |
Ryssland | AgroAtlas - Interactive Agricultural Atlas of Russia & Neighboring Countries |
Nya Zeeland | C. Howell (2008) - Consolidated List of Environmental Weeds in NZ |