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California Crop Improvement Association
California Crop Improvement Association
California Crop Improvement Association
University of California
California Crop Improvement Association

California Seed Law

CDFA Seed Law Enforcement - CDFA web site

California Seed Law 2014 (pdf for download)


Prohibited and Restricted Noxious Weed List

The list of prohibited and noxious weeds is located in Subchapter 3, Article 1, Section 3854 and 3855 (on page 19), as reproduced below

Noxious Weed Seed List from Seed Law 2014 (pdf for download)

3854. Prohibited Noxious Weed Seed

In accordance with Section 52332 of the Food and Agricultural Code, the Director hereby designates the seed or propagule of the following species* of plants to be prohibited noxious weed seed within the meaning of Section 52257 of the Food and Agricultural Code:

The following list was updated October 2011.

Alhagi psuedalhagi (camelthorn)
Cardaria chalepensis (lens-podded hoarycress)
Cardaria draba (heart-podded hoarycress)
Cardaria pubescenes (globe-podded hoarycess)
Carduus acanthoides (plumeless thistle)
Carduus nutans (musk thistle)
Carthamus leucocaulos (whitestem distaff thistle)
Centaurea repens (Russian knapweed)
Cirsium arvense (Canada thistle)
Cirsium undulatum (wavyleaf thistle)
Cucumis melo var. dudaim (dudaim melon)
Euphorbia esula (leafy spurge)
Helianthus ciliaris (blueweed)
Lepidium latifolium (perennial peppercress)
Onopordum spp. (onopordum thistles)
Rorippa austriaca (Austrian fieldcress)
Solanum carolinense (Carolina horsenettle)
Solanum elaeagnifolium (white horsenettle)
Sonchus arvensis (perennial sowthistle)

*Botanical names may not reflect currently accepted nomenclature which is not always corrected immediately in the official text of the California Code of Regulations.

3855. Restricted Noxious Weed Seed

In accordance with Section 52332 of the Food & Agricultural Code, the Director hereby designates the seed or propagule of the following species* of plants to be Restricted noxious weed seed within the meaning of Section 52258 of the Food and Agricultural Code:

The following list was updated October 2011.

Agropyron repens (quakgrass)
Allium vineale (wild garlic)
Carduus pycnocephalus (Italian thistle)
Carduus tenuiflorus (slenderflowered thistle)
Carthamus baeticus (smooth distaff thistle)
Carthamus lanatus (woolly distaff thistle)
Cenchrus echinatus (southern sandbur grass)
Cenchrus incertus (coast sandbur grass)
Cenchrus longispinus (mat sandbur grass)
Centaurea solstitialis (yellow starthistle)
Chorispora tenella (purple mustard)
Convolvulus arvensis (field bindweed)
Cuscuta spp. (dodder)
Cyperus esculentus (yellow nutgrass)
Cyperus rotundus (purple nutgrass)
Elymus caputmedusae (medusahead)
Elytrigia repens (quackgrass)
Halogeton glomeratus (halogeton)
Hypericum perforatum (Klamathweed)
Salvia aethiopis (Mediterranean sage)
Sorghum halepense (Johnsonsgrass and other perennial Sorghum spp. including but not limited to Sorghum almum and perennial sweet sudangrass)
Tribulus terrestris (puncturevine)

*Botanical names may not reflect currently accepted nomenclature which is not always corrected immediately in the official text of the California Code of Regulations.

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