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.
DOI. U.S. Geological Survey; Great Lakes Commission; DOC. National Oceanic and Atmospheric Administration; Great Lakes Fishery Commission.
Aquatic Nuisance Species Task Force.
This database was designed to direct users to invasive species experts. The public portion of the database will guide you to a state contact who acts as a filter for information and identifications.
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.
North American Native Plant Society.
Local Native Plant Societies are often your best source of information about plants native to your area.
Note: Provides information for State and Canadian Provinces.
Asian Carp Regional Coordinating Committee.
See Asian Carp Newsroom for updated news regarding Asian carp response in the midwest.