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federal noxious weed seed list

Animal and Plant Health Inspection Service, USDA.

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(7) Destination of the noxious weeds;

Drymaria arenariodes Humboldt & Bonpland ex J.A. Schultes (lightning weed)

Under the authority of the Federal Seed Act (FSA) of 1939, as amended (7 U.S.C. 1551 et seq.), the U.S. Department of Agriculture (USDA) regulates the importation and interstate movement of certain agricultural and vegetable seeds and screenings. Title III of the FSA, “Foreign Commerce,” requires shipments of imported agricultural and vegetable seeds to be labeled correctly and to be tested for the presence of the seeds of certain noxious weeds as a condition of entry into the United States. APHIS’ regulations implementing the provisions of title III of the FSA are found in 7 CFR part 361. A list of noxious weed seeds is contained in § 361.6. Paragraph (a)(1) of § 361.6 lists species of noxious weed seeds with no tolerances applicable to their introduction into the United States.

We would like to thank all states for their continued support with this annual project.

The Society of Commercial Seed Technologists (SCST) is an organization of professional seed technologists dedicated to research, proficiency and improvement in seed testing from private and company laboratories across the United States.


The Association of Official Seed Analysts (AOSA) is an organization of member laboratories dedicated to education and research including state, federal, and university laboratories from the United States and Canada.

Each year, USDA’s Seed Regulatory and Testing Division updates the State Noxious-Weed Seed Requirements Recognized in the Administration of the Federal Seed Act to match the noxious-weed seed lists in each state.

State Noxious-weed Seed List can be found on the USDA website by clicking HERE