University of Maryland Extension.

Vermont Department of Forests, Parks and Recreation. Forestry Division.

Montana State University Extension.

Herbicides are a class of pesticides used to kill or suppress weeds. This MontGuide introduces key concepts necessary for managing weeds and using herbicides safely and effectively.

University of Massachusetts Amherst. Northeast Climate Adaptation Science Center.

With climate change, many invasive plants are projected to shift their ranges, creating hotspots of future invasions across the U.S. Knowing the identities of new invasive plants headed to a nearby state creates an opportunity for proactive prevention and management. Unfortunately, monitoring for and managing all range-shifting invasive plants is untenable. To help prioritize range-shifting species, Northeast Climate Adaptation Science Center researchers performed impact assessments on 104 plants projected to expand into one or more mid-Atlantic states by 2040 with climate change. Their study was recently published (Oct 6, 2023) in Invasive Plant Science and Management "High-impact invasive plants expanding into mid-Atlantic states: identifying priority range-shifting species for monitoring in light of climate change."

DOI. Fish and Wildlife Service.

USDA. ARS. National Agricultural Library.

This collection of publications in NAL's Digital Repository provides access to and addresses a number of topics concerning the gypsy and the related brown-tail moths, from biological control methods to tree banding to quarantine practices. The bulk of the documents were published from 1891 to 1923 by various agencies in the area of the initial infestation, including the State Board of Agriculture for Massachusetts, New York, and Rhode Island, but also include some more modern USDA publications.

USDA. Animal and Plant Health Inspection Service.

Contains historical maps of feral swine populations by county (1982-2022).

USDA. FS. Southern Research Station. 

Seeds that float in the air can hitchhike in unusual places – like the air-intake grille of a refrigerated shipping container. A team of researchers from the USDA Forest Service, Arkansas State University, and other organizations recently conducted a study that involved vacuuming seeds from air-intake grilles over two seasons at the Port of Savannah, Georgia. The viability of such seeds is of significant interest to federal regulatory and enforcement agencies, and the project required a shared stewardship approach. Their findings were recently published in the journal Scientific Reports.

Seeds from 30 plant taxa were collected from the air-intake grilles, including seeds of wild sugarcane (Saccharum spontaneum), a grass on the USDA's Federal Noxious Weed List. (scroll to view list on Federal Noxious Weeds Program). Federal noxious weeds pose immediate, significant threats to agriculture, nursery, and forestry industries. Although a lovely grass and useful in its native range, wild sugarcane has the potential to join cogongrass, stiltgrass, and other nonnative species that have become extremely widespread in the U.S.

Lincoln County Noxious Weed Control Board (Washington).

See also: Weed I.D. and Options for Control for more species

Cornell University Cooperative Extension. Oneida County.

See also: Home and Garden - Weeds for more fact sheets

University of Illinois. Extension.

University of California - Riverside. Entomology.

USDA. National Agricultural Statistics Service.

In 2016 NASS began to collect data on honey bee health and pollination costs. Provides reliable, up-to-date statistics help track honey bee mortality.

New Mexico State University. College of Agricultural, Consumer and Environmental Sciences.

USDA. Agricultural Research Service.

Queensland Department of Agriculture and Fisheries (Australia). 

Maine Department of Agriculture, Conservation and Forestry.

Instituto Hórus de Desenvolvimento e Conservação Ambiental (Horus Institute of Environmental Development and Conservation, Brazil).

Special Note: Site in Portuguese and Spanish

Tip of the Mitt Watershed Council (Michigan).

North Dakota State University. Extension Service.