Have a plant or pest question? Questions from Maryland and the District of Columbia are answered by Home and Garden Information Center’s Certified Professional Horticulturists. If you are located outside of these areas, you will be asked to enter your state and county. Your question will be forwarded to the appropriate extension expert.
Invasive Species Resources
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University of Maryland. Cooperative Extension. Home and Garden Information Center.
eXtension is an educational partnership of more than 70 universities to help you improve your life every day with access to objective, research-based information and educational opportunities. Categories include integrated pest management and fire ants. Requires free registration.
See also: Use the One Search service to search the resources provided by your Cooperative Extension Service using a Google Custom Search Engine that includes many of the Cooperative Extension web sites provided by your Land-Grant institutions.
Note: Ask an Expert has been discontinued. The service has transitioned to a new platform with a new name: Ask Extension.
University of Arkansas. Cooperative Extension Service.
National Plant Diagnostic Network.
First Detector, a program of the National Plant Diagnostic Network (NPDN), equips a nationwide network of individuals to rapidly detect and report the presence of invasive, exotic plant pathogens, arthropods, nematodes, and weeds. If you suspect the presence of a high-impact plant pest or pathogen, contact a diagnostician and submit a sample for diagnosis.
National Plant Diagnostic Network.
NPDN is a national network of diagnostic laboratories that rapidly and accurately detect and report pathogens that cause plant diseases of national interest, particularly those that could be deemed to be a biosecurity risk. The specific purpose of the NPDN is to provide a cohesive, distributed system to quickly detect and identify pests and pathogens of concern.
USDA. APHIS. Plant Protection and Quarantine.
The National Wildlife Disease Program (NWDP) promotes safe agricultural trade by protecting the health of humans, animals, plants and ecosystems to reduce the levels of incurred losses to agricultural and natural resources. NWDP participates in wildlife disease monitoring and surveillance in all regions of the United States.
Oregon State University. National Pesticide Information Center (NPIC).
Through its county agents, the Cooperative Extension Service gives individuals access to the resources at land-grant universities across the nation. These universities are centers for research in many subjects, including entomology (the study of insects) and agriculture. Each county within the United States has an Extension office, which is staffed with agents who work closely with university-based Extension specialists to deliver answers to your questions about gardening, agriculture, and pest control.
USDA. Natural Resources Conservation Service.
NRCS offers technical and financial assistance to help farmers, ranchers and forest managers.
National Information System for the Regional IPM Centers.
Provides a searchable database for various key contacts, coordinators and experts.
DOC. NOAA. National Sea Grant Office.
DHHS. Centers for Disease Control and Prevention.
Provides links and resources for State Health Departments, many of which have information about Zika virus and West Nile virus with specific state information.
National Association of State Departments of Agriculture (NASDA).
The National Association of State Departments of Agriculture is comprised of the departments of agriculture in all fifty states and the territories of American Samoa, Guam, Puerto Rico, and the U.S. Virgin Islands. NASDA Members are coregulators with the federal government on a host of responsibilities including animal health, farmland protection, food safety, grain regulation, pesticide registration, and more.
U.S. Department of Agriculture.
USDA Service Centers are designed to be a single location where customers can access the services provided by the Farm Service Agency, Natural Resources Conservation Service, and the Rural Development agencies. This locator site provides Agency offices serving your area (by state and county).