Noxious Weeds

All States Noxious Weed Seed Testing includes noxious weeds listed in IDAPA 02.06.09. Species in the below tables refer to additional prohibited and restricted weeds for seed commodities. (7-1-26) IDAHO ADMINISTRATIVE CODE IDAPA 02.06.01 Department of Agriculture Production & Distribution of Seed Section 150 Page 4 01. Prohibited Weed Seeds -- Seed Commodities. (7-1-26) 02. Restricted Weed Seeds -- Seed Commodities (7-1-26) 03. Restricted Weed Seeds Tolerances. (7-1-26) a. Seven (7) seeds in fifty (50) grams of Agrotis species, Poa species, Rhodes grass, Bermudagrass, timothy, celery, and other agricultural or vegetable seeds of similar size and weight, within this group. (3-15-22) b. Seven (7) seeds in each fifty (50) grams of Dallisgrass, ryegrass, fescue species, foxtail millets, alfalfa, red clover, sweetclover, lespedeza, bromegrass, Brassica species, carrot, onion, and other agricultural or vegetable seeds of similar size and weight or mixtures within this group, or mixtures of this group with those in group A. (3-15-22) Common Name Scientific Name 1. Buffalobur 1. Solanum rostratum Dun. 2. Bursage, Skeleton leaf 2. Ambrosia tomentosa Nutt. 3. Camelthorn 3. Alhagi camelorum Fisch. 4. Carrot, Wild 4. Daucus carota L. 5. Fieldcress, Austrian 5. Rorippa austriaca (Crantz) Bess. 6. Goatgrass 6. Aegilops cylindrica Host 7. Groundcherry, Smooth 7. Physalis subglabrata Mackenz. & Bush 8. Nightshade, Silverleaf 8. Solanum elaeagnifolium Cav. 9. Quackgrass 9. Elytrigia repens; Agropyron repens (L.) Beauv. 10. St. Johnswort, Common 10. Hypericum perforatum L. 11. Swainsonpea 11. Sphaerophys salsula (Pall.) DC;  Swainsona salsula (Pallas) Taubert Common Name Scientific Name 1. Dodder 1. Cuscuta spp. 2. Halogeton 2. Halogeton glomeratus (Stephen ex Bieb.) C.A. Mey 3. Lettuce, Blue 3. Lactuca pulchella (Pursch) DC. 4. Oats, Wild 4. Avena fatua L. 5. Plantain, Buckhorn 5. Plantago lanceolata L. 6. Ragweed, Western and Perennial 6. Ambrosia psilostachya DC., (T. & G.) Farw. 7. Rye, Medusahead 7. Taeniatherum caput-medusae (L.) Nevski; Elymus caput-medusae (L.) 8. Sumpweed, Poverty 8. Iva axillaris Pursh IDAHO ADMINISTRATIVE CODE IDAPA 02.06.01 Department of Agriculture Production & Distribution of Seed Section 160 Page 5 c. Seven (7) seeds in fifty (50) grams of alsike clover, white clover, and other agricultural or vegetable seeds of similar size and weight or mixtures within this group, with those in group A or group B. (3-15-22) d. Eight (8) seeds in one hundred fifty (150) grams of Proso millet, Sudangrass, and seeds of similar size and weight, or mixtures of seed within this group. (3-15-22) e. Forty-five (45) seeds in each pound for all wheatgrass species. (3-15-22) f. Four (4) seeds in each five hundred (500) grams of wheat, oats, rye, barley, buckwheat, sorghums, vetches, field peas, and other seeds of a size and weight similar to or greater than those within this group, or any mixtures within this group. (3-15-22) g. Containing more than one percent (1%) by weight of weed seeds including restricted noxious weed seeds referred to in Section 22-414(18)(b), Idaho Code, provided, that three percent (3%) of cheat, chess, or downy brome will be allowed in grass seed in which these weeds are found. (3-15-22) 151. -- 159. (RESERVED)