Resource Search 1 | National Invasive Species Information Center

Jan 2014
Alberta Invasive Species Council (Canada).
See also: Fact Sheets for more information about individual invasive species, including those listed as "Prohibited Noxious" and "Noxious" under the Alberta Weed Control Act

King County Department of Natural Resources (Washington). Water and Land Resources Division.

North American Invasive Species Management Association.
The NAISMA Classical Biocontrol Committee is excited to announce new peer-reviewed weed biocontrol publications for use by managers and landowners. Subject matter experts are developing a series of factsheets that cover invasive plants and their associated biological control agents in North America. Funding for these factsheets is provided by the United State Forest Service. NAISMA is partnering with iBiocontrol.org to host these publications.
See also: Resources on Biocontrol and Classical Weed Biocontrol Factsheets Released for Landowners and Weed Managers (Press Release - Aug 31, 2022)

Colorado Department of Agriculture. Conservation Services Division. Noxious Weed Program.

Jan 8, 2019
North Dakota Department of Agriculture.
Palmer amaranth (Amaranthus palmeri) and houndstongue (Cynoglossum officinale L.) have been added to the state noxious weed list. Palmer amaranth is an aggressive pigweed species similar in appearance to waterhemp and was first found in the state last year. It has now been found in five counties. Houndstongue, which does not spread aggressively like Palmer amaranth, has been found in North Dakota since at least 1911 but infestations have tripled since 2008. It is now found in at least 25 counties. The public is urged to work with local weed officers, extension agents and other experts to identify and report suspect plants. More information on these and other noxious and invasive weeds is available at Noxious Weeds.