Whitesage post fire exhibit c noxious weed seed list 2.pdf
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- Aerial Seeding Kaibab National Forest
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Department of Agriculture Forest Service
About this file
This document is a regulatory reference guide listing noxious-weed seeds prohibited in interstate commerce under the Federal Seed Act.
Section 201.16(b) of the Federal Seed Act Regulations establishes that seeds or bulblets of specified plant species are classified as noxious-weed seeds and cannot be transported or delivered for transportation in interstate commerce, including Puerto Rico, Guam, and the District of Columbia. The document provides a comprehensive list of prohibited species for which no tolerance will be applied, including over 100 plant species such as Avena sterilis, various Prosopis species, Salvinia species, Striga species, and numerous others. Only agricultural seeds, including lawn seeds, are subject to state noxious-weed seed requirements under the Federal Seed Act, though interstate provisions apply to both agricultural and vegetable seeds. The document notes that vegetable seeds are not required to be labeled as to the presence of noxious-weed seeds despite being subject to interstate restrictions. The U.S. Department of Agriculture's Animal and Plant Health Inspection Service, Plant Protection and Quarantine Program (USDA APHIS PPQ) and plant health agencies in all 50 states regulate shipment of nursery and greenhouse stock. Reference resources are provided, including the Federal & State Quarantine Summaries at www.nationalplantboard.org/laws and the Association of American Seed Control Officials website at www.seedcontrol.org, which contains links to individual state seed laws and requirements.
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2025 State Noxious-Weed Seed Requirement Recognized in the Administration of the Federal Seed Act xiii
Section 201.16(b) of the Regulations under the Federal Seed Act provides: "Seeds or bulblets of the following plants shall be considered noxious-weed seeds in agricultural and vegetable seeds transported or delivered for transportation in interstate commerce (including Puerto Rico, Guam, and the District of Columbia). Agricultural or vegetable seed containing seeds or bulblets of these kinds shall not be transported or delivered for transportation in interstate commerce.
Noxious-weed seeds under the Federal Seed Act
Noxious-weed seeds include the following species on which no tolerance will be applied:
Aeginetia spp.
Ageratina adenophora (Spreng.) King and
H.E. Robins.
Alectra spp.
Alternanthera sessilis (L.) DC.
Asphodelus fistulosus L.
Avena sterilis L. (including Avena ludoviciana Dur.)
Azolla pinnata R. Br.
Carthamus oxyacantha M. Bieb.
Chrysopogon aciculatus (Retz.) Trin.
Commelina benghalensis L.
Crupina vulgaris Cass.
Digitaria scalarum (Schweinfurth)
Chiovenda Digitaria velutina (Forsk.) Beauv.
Drymaria arenarioides Roem. and Schult.
Eichhornia azurea (Sw.) Kunth Emex australis Steinh.
Emex spinosa (L.) Campd.
Galega officinalis L.
Heracleum mantegazzianum Sommier &
Levier Homeria spp.
Hydrilla verticillata (L. f.) Royle Hygrophila polysperma T. Anders.
Imperata brasiliensis Trin.
Imperata cylindrica (L.) Raeusch.
Ipomoea aquatica Forsk.
Ischaemum rugosum Salisb.
Lagarosiphon major (Ridley) Moss Leptochloa chinensis (L.) Nees Limnophila sessiliflora (Vahl) Blume Lycium ferocissimum Miers Melaleuca quinquenervia (Cav.) Blake Melastoma malabathricum L.
Mikania cordata (Burm. f.) B.L. Robins.
Mikania micrantha H.B.K.
Mimosa invisa Mart.
Mimosa pigra L. var. pigra Monochoria hastata (L.) Sloms-Laub.
Monochoria vaginalis (Burm. f.) K.B. Presl Nassella trichotoma (Nees) Arechavaleta Opuntia aurantiaca Lindl.
Oryza longistaminata A. Cheval. and Roehr.
Oryza punctata Steud.
Oryza rufipogon Griff.
Ottelia alismoides (L.) Pers.
Paspalum scrobiculatum L.
Pennisetum clandestinum Chiov.
Pennisetum macrourum Trin.
Pennisetum pedicellatum Trin.
Pennisetum polystachion (L.) Schult.
Prosopis alpataco R.A. Philippi Prosopis argentina Burkart Prosopis articulata S. Watson Prosopis burkartii Munoz Prosopis caldenia Burkart Prosopis calingastana Burkart Prosopis campestris Griseb.
Prosopis castellanosii Burkart Prosopis denudans Benth.
Prosopis elata (Burkart) Burkart Prosopis farcta (Russell) Macbride Prosopis ferox Griseb.
Prosopis fiebrigii Harms Prosopis hassleri Harms Prosopis humilis Hook. and Arn.
Prosopis kuntzei Harms Prosopis pallida (Willd.) H.B.K.
Prosopis palmeri S. Watson Prosopis reptans Benth. var. reptans Prosopis rojasiana Burkart Prosopis ruizlealii Burkart Prosopis ruscifolia Griseb.
Prosopis sericantha Hook. and Arn.
2025 State Noxious-Weed Seed Requirement Recognized in the Administration of the Federal Seed Act xiv
Prosopis strombulifera (Lam.) Benth.
Prosopis torquata (Lagasca) DC.
Rottboellia cochinchinensis (Lour.) Clayton Rubus fruticosus L. (complex) Rubus moluccanus L.
Saccharum spontaneum L.
Sagittaria sagittifolia L.
Salsola vermiculata L.
Salvinia auriculata Aubl.
Salvinia biloba Raddi Salvinia herzogii de la Sota Salvinia molesta D.S. Mitchell Senecio inaequidens DC.
Senecio madagascariensis Poir.
Setaria pallide-fusca (Schumach.) Stapf and
Hubb.
Solanum tampicense Dunal Solanum torvum Sw.
Solanum viarum Dunal Sparganium erectum L.
Spermacoce alata (Aublet) de Candolle Striga spp.
Tridax procumbens L.
Urochloa panicoides Beauv.�
Under the Federal Seed Act, only agricultural seeds (including lawn seeds) are subject to State noxious-weed seed requirements. However, the interstate provisions as listed above apply to both agricultural and vegetable seeds, even though vegetable seeds are not required to be labeled as to the presence of noxious-weed seeds.
The U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Plant Protection and Quarantine Program (USDA APHIS PPQ) and the plant health agencies in each of the 50 states, regulate the shipment of nursery and greenhouse stock to minimize the spread of harmful insects, diseases, and other pests. The Federal & State Quarantine Summaries is designed as a reference tool for nursery stock growers, brokers, purchasers, and others involved in the buying, selling, and interstate transport of nursery and greenhouse plant crops. It outlines the basic quarantine and other plant health requirements of APHIS, all 50 states, and Puerto Rico. This publication is available at www.nationalplantboard.org/laws.
The Association of American Seed Control Officials publishes a website at www.seedcontrol.org that has links to each State's webpage. Most of those State's webpages have links to their state seed law.
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