Weeds of BC – information on integrated weed management and weed species in BC

Invasive Plant Council of BC – a Provincial organization that links various organizations involved in weed management

Ministry of Agriculture and Lands – field guide to noxious and other selected weeds of BC

Ministry of Forests – Alien Invasive Plant Program – forest practices branch invasive alien plant program application with Provincial standards for invasive species inventory and management and a database for BC

E-Flora BC – a database of plants, including invasive species, in BC

Plants Database – a database for invasive plants in the United States

RDKB and Boundary Weed Management Committee - includes information on weeds to watch for, weed control, and the RDKB program

Okanogan County Weed Control Board - includes information on control methods and identification of weeds listed in Okanogan County

Washington Weed Control Board - includes excellent photos for identification and control information for weeds listed in Washington

Idaho Agriculture - includes information on weeds listed in Idaho

USDA Forest Service - includes links to numerous invasive plant databases in the US.