CALIFORNIA DEPARTMENT OF FOOD AND AGRICULTURE 107.1 

PLANT QUARANTINE MANUAL 03-10-09 

CALIFORNIA QUARANTINE POLICY - WEEDS

The regulations of the interstate movement of weed pests into 

California is provided for in three areas of law and their related 

regulations: 

1. Food and Agricultural Code, Division 4. Plant Quarantine 

and Pest Control provides quarantine authority against weed 

pests under Sections 6305 (unlawful to transport seed pests), 

6341 through 6344 (seed pests in shipments), or 6461 through 

6465 (abatement, reshipment, or treatment). These sections 

allow for the rejection of "A" and "Q" -rated weed pests 

whenever found and or "B" or "C"-rated weed pests based on 

individual county weed policy. Section 6461.5 is only applicable 

to weeds when a specimen has been collected from a 

shipment; “reasonable cause” cannot be used to reject without 

a sample of the weeds or weed seeds. 

2. Food and Agriculture Division 18., Chapter 2, California 

Seed Law Sections 52251 through 52515 regulates 

"noxious weed" (Food and Agriculture 5004) seed found in 

agricultural or vegetable seed. The law allows for designation 

of "prohibited noxious weed seed" and "restricted noxious 

weed seed" for the adoption of standards and tolerances. 

Rejection and disposition of shipments, if not justified under 

quarantine action, are based on label requirements that are 

subject to tolerances. 

3. The Plant Protection Act (Title IV of the federal Agriculture 

Risk Protection Act of 2000) replaces 10 existing federal 

laws with one statutory framework. This new act provides the 

USDA with the ability to prohibit or restrict imports, exports or 

interstate movements of noxious weeds. 

Subtitle A of the Plant Protection Act:

Section 412: The USDA may prohibit or restrict the 

importation, entry, exportation, or movement in interstate 

commerce of any plant, plant product, biological control 

organism, noxious weed, article or means of conveyance, if the 

USDA determines that the prohibition or restriction is 

necessary to prevent the introduction into the United States or 

the dissemination of a plant pest or noxious weed within the 

United States. 

Section 414: If the USDA considers it necessary in order to 

prevent the dissemination of a plant pest or noxious weed that 

is new to or not known to be widely prevalent or distributed 

within and throughout the United States, the USDA may hold, 

seize, quarantine, treat, apply other remedial measures to, 

destroy or otherwise dispose of any plant, plant pest, noxious 

weed, biological control organism, plant product, article or 

means of conveyance. 

Note: Regulations issued under the authority of a provision of 

any law repealed by the Plant Protection Act shall remain in 

effect until such time as the USDA issues a regulation that 

supersedes the earlier regulation. The USDA is actively 

reviewing and revising existing noxious weed regulations at 

this time. 

A & Q RATED WEEDS 

Except as provided in Section 3556 of the California Code of 

Regulations (California Feed Grain Program), shipments infested 

with any mature seed or other parts capable of propagation of any 

of the following species, shall be rejected whenever found and 

disposition offered as provided in Sections 6305, 6341 through 

6344, or 6461 through 6465 of the Food and Agricultural Code. 

* Acaena nova-zelandiae (= A. anserinifolia in 

 part as used previously, and of British and 

 Australian authors.) (biddy biddy) 

 Acaena pallida (= A. anserinifolia in part as used 

previously.) (pale biddy biddy) 

 Achnatherum brachychaetum (= Stipa 

brachychaeta) (punagrass) 

* Aeschynomene rudis (rough jointvetch) 

Alhagi maurorum sensu lato(=A.pseudalhagi) 

(camelthorn) * Alternanthera philoxeroides (alligatorweed) 

Alternanthera sessilis (sessile joyweed) ** Arctotheca calendula (capeweed) 

Atriplex amnicola (=A. cephalantha) (river saltbush) 

Berteroa incana (=Alyssum incanum) (hoary 

alyssum) 

Brachypodium sylvaticum (slender false brome) 

Cabomba caroliniana (Carolina fanwort) * Carduus acanthoides (plumeless thistle) 

Carduus crispus (welted thistle) * Carduus nutans (musk thistle) 

* Carthamus leucocaulos (whitestem distaff thistle) ** Centaurea diffusa (diffuse knapweed) ** Centaurea iberica (Iberian starthistle) 

** Centaurea maculosa (spotted knapweed) 

Centaurea X monktonii (=C. pratensis, C. debeauxii 

var. thuilleri) (meadow knapweed) 

** Centaurea squarrosa (squarrose knapweed) 

Ceratopteris thalictroides (watersprite) 

* Chondrilla juncea (skeletonweed) 

 Cirsium japonicum (Japanese thistle) 

** Cirsium ochrocentrum (yellowspine thistle) 

** Cirsium undulatum (wavyleaf thistle) 

* Crupina vulgaris (bearded creeper) 

** Cucumis melo var. dudaim (dudaim melon) 

** Cuscuta spp. (non-native) (giant dodder) 

Diodia virginiana (buttonweed) 

 Drymaria cordata (= Holosteum cordata) 

(whitesnow) 

Egeria najas 

** Euphorbia esula (leafy spurge) 

 Euphorbia graminea (grass-leaf spurge)

** Euphorbia serrata (serrate spurge) 

 Euphorbia terracina (Geraldton carnation spurge) 

Fatoua villosa (hairy crabwees) 

* Halimodendron halodendron (Russian salt tree) 

*** Halogeton glomeratus (halogeton) 

** Helianthus ciliaris (blueweed) 

* Heteropogon contortus (tanglehead) 

** Hydrilla verticillata (hydrilla) 

*** Hydrocharis morsus-ranae (frogbit) 

Hygrophila polysperma (swampweed) 

 Hypericum canariense (Canary Island St. 

Johnswort) 

 Lagarosiphon major (curly waterweed, oxygenweed)

Limnobium laevigatum (South American 

spongeplant) 

Limnobium spongia (spongeplant) 

Limnophila indica (ambulia) 

Limnophila sessiliflora (dwarf ambulia) 

* Linaria genistifolia ssp. dalmatica (= L. dalmatica) 

(Dalmatian toadflax) 

Ludwigia peruviana (water primrose) 

Myosoton aquaticum (= Stellaria aquatica) (giant 

chickweed) 

Ononis alopecuroides (foxtail restharrow) 

 Onopordum acanthium (Scotch thistle) 

 Onopordum illyricum (Illyrian thistle) 

 Onopordum tauricum (Taurian thistle) 

* Orobanche cooperi (Cooper's broomrape) 

* Orobanche ramosa (branched broomrape) * Peganum harmala (harmel) 

* Physalis longifolia (long-leaf groundcherry) 

Potentilla recta (sulfur cinquefoil) 

* Prosopis strombulifera (creeping mesquite) 

Retama monosperma (Bridal broom) 

Rorippa sylvestris (creeping yellow field cress) 

Salsola collina (spineless Russianthistle)

* Salsola vermiculata sensu lato (wormleaf saltwort) * Salvia virgata (= S.pratensis.) (southern meadow 

sage) 

Salvinia auriculata complex (including S. auriculata, 

S. biloba, S. herzogii) (giant salvinia) 
107.2 CALIFORNIA DEPARTMENT OF FOOD AND AGRICULTURE 

08-07-08 PLANT QUARANTINE MANUAL 

Salvinia molesta (giant salvinia) 

* Scolymus hispanicus (golden thistle) 

Senna obtusifolia (sicklepod, Java bean) 

 Sesbania punicea (= S. tripetii) (rattlebox, scarlet 

wisteria) 

** Solanum cardiophyllum (heartleaf nightshade) 

* Solanum dimidiatum (Torrey's nightshade) 

** Sonchus arvensis (perennial sowthistle) 

* Sphaerophysa salsula (Austrian peaweed) 

* Striga asiatica (=S. lutea) (witchweed) 

* Tagetes minuta (wild marigold) 

Tribolium obliterum (Cape grass) 

 Zostera japonica (Japanese eelgrass) 

* Zygophyllum fabago (= Z.fabago var. 

brachycarpum) (Syrian beancaper)

* Found in Transit – Unlikely 

** Found in Transit – Rarely 

*** Found in Transit -- Frequently 

B & C RATED WEEDS 

Except as provided in Section 3556 of the California Code of 

Regulations (California Feed Grain Program), shipments infested 

with any mature seed or other parts capable of propagation of any 

of the following species shall be rejected only when in the area of 

destination: (1) the weed pest is not of common occurrence or (2) if 

intensive control or eradication measures are being conducted 

against such a pest. 

B RATED WEEDS

* Acacia paradoxa (= A. armata) (kangaroo thorn) 

Acaena magellanica (bidi-bidi) 

*** Acroptilon repens (= Centurea repens) (Russian knapweed) 

* Aegilops cylindrica (jointed goatgrass) 

* Aegilops ovata (ovate goatgrass) 

* Aegilops triuncialis (barb goatgrass) 

* Allium paniculatum (panicled onion) 

** Allium vineale (wild garlic) 

** Ambrosia trifida (giant ragweed) 

* Araujia sericifera (bladderflower) 

Arundo donax (giant reed) 

 Bacopa monnieri (=Bramia monnieri) (water-hyssop) 

 Bupleurum rotundifolium (hare’s ear, throughwax)

*** Cardaria chalepensis (lens-podded hoarycress) 

*** Cardaria draba (heart-podded hoarycress) 

*** Cardaria pubescens (globe-podded hoarycress) 

* Carthamus baeticus (smooth distaff thistle) 

* Carthamus lanatus (woolly distaff thistle) 

*** Centaurea calcitrapa (purple starthistle) 

* Centaurea sulphurea (Sicilian thistle) 

** Chorispora tenella (purple mustard) 

*** Cirsium arvense (Canada thistle) 

* Coronopus squamatus (swinecress) 

Cortaderia jubata (= Gynerium jubatum) (pampas 

grass) 

* Cucumis myriocarpus (paddy melon) 

** Cynara cardunculus (artichoke thistle) 

** Cyperus esculentus (yellow nutsedge) 

** Cyperus rotundus (purple nutsedge) 

*** Elytrigia repens (= Agropyron repens) (quackgrass) 

* Euphorbia oblongata (= E. platyphylla)(oblong spurge) 

** Gaura coccinea (scarlet gaura) 

** Gaura drummondii (Drummond’s gaura) 

** Gaura sinuata (wavy-leaved gaura) 

* Gypsophila paniculata (baby's breath) 

* Isatis tinctoria (dyer's woad) 

** Lepidium latifolium (perennial peppercress) 

* Lythrum salicaria (purple loosestrife) 

* Muhlenbergia schreberi (nimblewill) 

Nassella tenuissima (finesteam tussockgrass, 

feathergrass) 

107.2 

02-04-10 

* Nothoscordum gracile (fragrant false garlic) 

* Nymphaea mexicana (banana waterlily) 

** Oryza rufipogon (perennial wild red rice) 

* Panicum antidotale (blue panicgrass) 

* Physalis viscosa (grape groundcherry) 

*** Pistia stratiotes (water lettuce)

* Polygonum cuspidatum (Japanese knotweed) 

* Polygonum polystachyum (Himalayan knotweed) 

* Polygonum sachalinense (giant knotweed) 

* Rorippa austriaca (Austrian field cress) 

** Salvia aethiopis (Mediterranean sage) 

** Senecio jacobaea (tansy ragwort) 

* Senecio squalidus (Oxford ragwort) 

** Setaria faberi (giant foxtail) 

** Solanum carolinense (Carolina horsenettle) 

** Solanum elaeagnifolium (white horsenettle) 

* Solanum lanceolatum (lanceleaf nightshade) 

* Solanum marginatum (white-margined nightshade) 

Sorghum halepense (Johnsongrass) 

* Symphytum asperum (rough comfrey) 

Tamarix chinensis (=T. caspica, T. gallica, T. japonica) 

(Chinese tamarisk) 

Tamarix gallica (= T. canariensis, T. ehrenbergii, T. 

elegans, T. epacroides, T. evermanni, T. indica, T. 

lessingii, T. libanotica, T. mannifera, T. narbonensis, T. 

nilotica, T. palaestina, T. pallasii, T. paniculata, T. 

pentrdra, T. senegalensis, T. tetrandra) 

Tamarix parviflora (T. cretica, T. gallica, T. pentandra, T. 

petteri) 

Tamarix ramosissima (=T. gallica) 

* Ulex europaeus (gorse) 

* Viscum album (European mistletoe) 

C RATED WEEDS 

Ailanthus altissima (= Ailanthus altissima) (tree-ofheaven) 

*** Bacopa monnieri (= Bramia monnieri) (water 

hyssop, moneywort) 

** Carduus pycnocephalus (= C. pycnocephalus, 

Kentrophyllum baeticum, Carthamus lanatus ssp.) (Italian 

thistle) 

** Carduus tenuiflorus (= C. pyncocephalus, C. 

malacitanus, C. sardous) (slenderflowered thistle) 

** Cenchrus echinatus (southern sandbur grass) 

** Cenchrus incertus (= C. pauciflorus, C. spinifex, C. 

parviceps) (coast sandbur grass) 

** Cenchrus longispinus (= C. pauciflorus, Cenchrus 

echinatus) (mat sandbur grass) 

Centaurea melitensis (tocalote) 

*** Centaurea solstitialis (yellow starthistle) 

Cirsium vulgare (=Carduus lanceolatus, Cirsium 

lanceolatum, Cnicus lanceolatus) (bull thistle) 

** Convolvulus arvensis (field bindweed) 

 Cotula mexicana (= Soliva Mexicana, Soliva pygmaea, 

Cotula minuta, Hippia minuta, Gymnostyles minuta, 

Lancisia minuta, Soliva minuta) (pygmy brass buttons) 

*** Cuscuta spp. (Native) (dodder) 

*** Cynodon spp. & hybrids (bermudagrass) 

* Cytisus scoparius (Scotch broom) 

Egeria densa (= Anacharis densa, Elodea densa, 

Philotria densa) (Brazilian waterweed) 

*** Eichhornia crassipes (= Pontederia crassipes, P. 

crassipes, Piaropus crassipes, Piaropus crassipes) 

(water hyacinth) 

* Genista monspessulana (=Cystis monspessulanus) 

(French broom) 

* Hyoscyamus niger ((black henbane) 
CALIFORNIA DEPARTMENT OF FOOD AND AGRICULTURE 107.3 

PLANT QUARANTINE MANUAL 08-07-08 

** Hypericum perforatum (Klamathweed) 

* Iris douglasiana (Douglas iris) 

* Iris missouriensis (Western blue flag) 

** Iva axillaris (povertyweed) 

** Malvella leprosa (= Sida leprosa var. hederacea) 

(alkali mallow) 

** Myriophyllum spicatum (Eurasian water milfoil) 

Nassella tenuissima (= Stipa tenuissima, stipa 

cirrosa, Stipa geniculata, Stipa mendocina, 

Stipa oreophila, Stipa subulata, Stipa 

tenuissims)(finesteam tussockgrass, 

feathergrass) 

Nymphaea odorata (=Castalia odorata) (fragrant 

waterlily) 

* Pennisetum clandestinum (Kikuyugrass) 

* Polygonum amphibium var. emersum ( P. coccineum)

(kelp) 

 Rotala rotundifolia (roudleaf rotala) 

*** Salsola paulsenii (S. pellucida) (barbwire 

Russianthistle) 

*** Salsola tragus (= S. iberica) (common Russianthistle) 

*** Sorghum halepense (Johnsongrass and other 

perennial Sorghum spp. including but not limited to 

Sorghum almum and perennial sweet sudangrass) 

* Taeniatherum caput-medusae (Elymus caputmedusae or T. asperum) (medusahead) 

** Tribulus terrestris (puncturevine) 

* Found in Transit – Unlikely 

** Found in Transit – Rarely 

*** Found in Transit – Frequently 

^ Given a tentative “B” Rating; awaiting finalization 

PLANT PROTECTION ACT 03-23-01

The following mature plants, seeds, or other parts capable of 

propagation are within the definition of a "noxious weed" under 

regulations pursuant to the Plant Protection Act and shall not be 

moved unless under permit from the USDA, Plant Protection and 

Quarantine Programs. For material moving within the State, a State 

permit is sufficient. 

a. Aquatic and Wetland Weeds: 

Azolla pinnata 

 Caulerpa taxifolia (Mediterranean clone)

 Eichhornia azurea 

♦ Hydrilla verticillata 

 Hygrophila polysperma 

 Ipomoea aquatica 

Lagarosiphon major 

♦ Limnophila sessiliflora 

 Monochoria hastata 

♦ Monochoria vaginalis 

Ottalia alismoidas 

 Sagittaria sagittifolia 

Salvinia auriculata 

 Salvinia biloba 

 Salvinia herzogii 

♦ Salvinia molesta 

 Solanum tampicense (wetland nightshade) 

Sparganium erectum 

Stratiotes aloides 

b. Parasitic Weeds: 

Aeginetia ssp. 

Alectra ssp. 

♦ Cuscuta spp. ƒ 

♦ Orobanche spp. ƒƒ 

Striga spp. 

c. Terrestrial Weeds: 

Ageratina adenophora 

 Alternanthera sessilis 

 Asphodelus fistulosus 

 Avena sterilis (including 

A. ludoviciana) 

Carthamus oxycantha 

 Chrysopogon aciculatus 

Commelina benghalensis 

 Crupina vulgaris 

 Digitaria scalarum 

 Digitaria velutina 

 Drymaria arenarioides 

 Emex australis 

 Emex spinosa 

 Galega officinalis 

 Heracleum mantegazzianum

Homeria spp. 

Imperata brasiliensis

 Imperata cylindrica 

 Ischaemum rugosum 

 Leptochloa chinensis 

 Lycium ferocissimum 

 Melaleuca quenquinervia 

 Melastoma malabathricum 

 Mikania cordata 

 Mikania micrantha 

 Mimosa invisa 

 Mimosa pigra var pigra 

Nassella trichotoma 

 Opuntia aurantiaca 

 Oryza longistaminata 

Oryza punctata 

 Oryza rufipogon 

Paspalum scrobiculatum 

• Pennisetum clandestinum 

 Pennisetum macrourum 

 Pennisetum pedicellatum 

 Pennisetum polystachion 

 Prosopis alpataco 

 Prosopis argentina 

 Prosopis articulata 

 Prosopis burkartii 

 Prosopis caldenia 

 Prosopis calingastana 

 Prosopis campestris 

 Prosopis castellanosii 

 Prosopis denudans 

 Prosopis elata 

 Prosopis farcta 

 Prosopis ferox 

 Prosopis fiebrigii 

 Prosopis hassleri 

 Prosopis humilis 

 Prosopis kuntzei 

 Prosopis pallida 

 Prosopis palmeri 

 Prosopis reptans 

 Prosopis rojasiana 

 Prosopis ruizleali 

 Prosopis ruscifolia 

 Prosopis sericantha 

 Prosopis strombulifera 

 Prosopis torquata 

 Rottboellia cochinchinensis 

 Rubus fruticosus 

 Rubus moluccanus 
107.4 CALIFORNIA DEPARTMENT OF FOOD AND AGRICULTURE 

08-07-08 PLANT QUARANTINE MANUAL 

Saccharum spontaneum 

 Salsola vermiculata 

Setaria pallide-fusca 

 Solanum torvum 

 Solanum viarum 

 Spermacoce alata 

 Tridax procumbens 

Urochloa panicoides 

ƒ See 7 CFR 360 for exceptions 

ƒƒ See 7 CFR 360 for exceptions 

 May be moved intrastate without a permit. Grown 

and/or distributed as produce in California. 

• May be moved intrastate with a permit. 

 Known to occur and of limited distribution in California. 

Interstate, intrastate and international movement require 

appropriate USDA or CDFA plant pest permit. 

Other movement of all other listed species requires a 

USDA permit for interstate or international shipments.

This weed policy does not restrict the designation as a pest of 

any species not listed herein as defined in Section 5006 of the 

Food and Agricultural Code. 
107.5 CALIFORNIA DEPARTMENT OF FOOD AND AGRICULTURE 

08-19-08 PLANT QUARANTINE MANUAL 

 X Reject

 Reject only when found in seed for planting or at the discretion of the Agricultural Commissioner 

1,2&3 – Bird seed infested with “B” or “C” rated weed seed: 1. Treat as shown in above chart 2. Release 3. Handle as feed grain

CALIFORNIA QUARANTINE POLICY – WEEDS 

The following chart indicates the commissioner’s weed policy covering “B” & “C.” weeds. Weed

County 

Alkaline Mallow Artichoke thistle Austrian Fieldcress Baby’s Breath *

Banana Waterlily Barbwire Russian Thistle Bermuda Grass BladderflowerBlue Panicgrass Canada Thistle Carolina Horsenettle Chicory

Southern Russian Thistle Distaff Thistle DodderDyer’s Wood False Garlic Field Bindweed French Broom Giant Foxtail Giant Knotweed Giant Ragweed Goat Grasses Gorse Grape Groundcherry Himalayan Knotweed Hoary Cresses Italian & Slender-flower Thistle Japanese Knotweed JohnsongrassKangaroo Thorn KelpKikuyugrass

1 Alameda  X XX X X  XX XX   X  X X   XX X  XXX   XXX  

1 Amador   X  X X  XX XX  X X  X X  X XX X  X XXXX X

1 Butte  X X  X   XX XX   X  X X   XX X  XXX   X  XXX

1 Calaveras  X X  X X  XX XX  X X  X X  X XX X  XXXX  XX X

2 Colusa  X XX X X  XX XX   X  X X  X XX XXXXXX  XXXXX

1 Contra Costa  X X  X   XX XX   XX XX   XX XXXXXX  X  X  

Del Norte XX XX X XX XX  X  X XX XX XX XX XXXXXXXXXXXX

1 El Dorado  X XX X X   X XX     X X   XX X  XXXX  X  X X 

1 Fresno  X X  X X  X  X X  X XX X  XX XX XXXXXXXX  XXX

1 Glenn  X XX X X  XX XX   XX XX   XX XXXXXXXX  X  X

1 Humboldt XX XX X X XX X X XX XX XX XXX XX XX

1 Imperial   X    X  X X

1 Inyo-mono XX X  X  XX XX  X  X X  X XX XXXXXXXX  XXX

1 Kern  X X  X   XX XX X  X X  X XX  X XXXXXXXX  XXX

Kings X XX X   XX XX X  X  XX XX XX XXXXXXXX  X  X

1 Lake XX XX X X  XX XX   X  X X   XX XXXXXXXXXXXX

Lassen  XX X X  X X XX X X X 

3 Los Angeles  X X  XX X          X X   

1 Madera   XX X   XX X    X  X X  X XX XXXXXXXX  X  

1 Marin  X  X     X X   X  X X  XX XX  XXX XX   

1 Mariposa   XX X X  XX XX   X  X X  X XX XXXXXX  X  X  X

1 Mendocino XX XX X X  XX XX  X X  X X  X XX XXXXXXXX  XXX

1 Merced  X XX X X  XX XX   X  X X  X XX XXXXX   X  X  X

1 Modoc X X  X X   X  X X   X  X X   XX X  X  XXXXXXXX

Monterey X XX X X XX XX X X XX  XX XXXXX X  X

1 Napa  X XX X   XX XX   X  X X   XX XXXXX   X  X  

1 Nevada  X XX X X XX XX  X  X X  X X XXXXXX X  X  X

1 Orange   X  XX X    X  

1 Placer XX XX X X XX XX X XX XX X  XX X  XXXXXX  X X

1 Plumas-Sierra  X XX    X X   X  XX XX        X X     

1 Riverside X X    X X X X X X  X  XXX  

2 Sacramento   X   X  XX XX   X  X X   XX X  XXXXXX  XXX

1 San Benito   X  X X  XX XX   XX XX  X XX XXXXX   X  X  X

San Bernadino  XX X  XX XX X  X X  X XX XXXXXXXX  X X

1 San Diego X  XX X          

San Francisco X X

1 San Joaquin X X X XX XX  X  X X  X XX XXXXXX  X  X  X

1 San Luis Obispo XX X X XX XX XX  X  X X  X XX XXXXXX  XXXX 

1 San Mateo XX X       X X   X  X XX     X   X   X   

1 Santa Barbara  X X  XX X  X   X X  X X

Santa Clara   X  X XX  X XX   X  X X  X XX XXXXXX  X  X  

2 Santa Cruz  XX X   XX XX   X  X X   XX XXXXX   X  X 

1 Shasta X X X XX XX X XX X XX

1 Siskiyou  X XX XX XX  X XX XX XX XX XXXXXXXXXX  X

1 Solano  X X XXX  X  X X   XX XX  X    X X   X  X  X  

Sonoma XX XX  X    X X  X XX X    XX XXXXXX  X  X  

1 Stanislaus   X  X X  XX XX X  X X  X XX XXXXXXXX  X X

1 Sutter X XX X X XX XX X X  X X  X XX XXX XXXX  X X

1 Tehama  X XX X X  XX XX   X  X X  X XX XXXXXX  X  X  X

Trinity N O P O L I C Y F O R B & C R A T E D W EEDS

1 Tulare  X XX X X    X X   XX XX XX XX XXXXXXXX  X  X

1 Tuolomne  X XX  X    X X                X      

1 Ventura  X X X X XX XX   X  X X  X XX XXXXXXXXXX  X

Yolo  X XX X   XX XX   XX XX  X XX XXXXXX  X  X  X

1 Yuba X XX X  XX XX  X  XX X XX X  XXXX X X X

* Policy applicable only to Gypsophila paniculata (seed and fertile forms), shipments labeled only as “Baby’s Breath” and unlabeled shipments. 

Shipments labeled as G. paniculata (sterile), G. paniculate (Doubled flowered), G. elegans, G. muralis or G. repens should be released. 
CALIFORNIA DEPARTMENT OF FOOD AND AGRICULTURE 107.6 

PLANT QUARANTINE MANUAL 08-19-07 

CALIFORNIA QUARANTINE POLICY – WEEDS 

The commission eed policy covering “B” & “C” rated weeds (including seeds) chart continued. er’s wWeed

County 

Klamath Weed Lanceleaf Nightshade Mediterranean Sage MedusaheadNimblewillOblong Spurge Paddy Melon Panicled Onion Perennial Pepperweed Poverty Weed Puncture Vine Purple Mustard Purple Nutgrass Purple Starthistle Quackgrasses Rough Comfrey Russian Knapweed Sandbur Grasses SatintailScarlet Gaura Drummond’s Gaura Scotch Broom Sicilian Thistle Stemless Thistle Tansy Ragwort Wavy – Leaved Gaura White Horsenettle White – Margined Nightshade Wild Garlic Wild Iris Yellow Nutgrass Yellow Starthistle 

1 Alameda X X XX X X X X X  X X  X X X X X X XX X X XXX X X X X   

1 Amador XX X  X XX XX X  X X  X X X X X X X X X X X X X X X  X 

1 Butte XX X  X XX XX X  X  XX XX XX XX  XXXXXXX  X 

1 Calaveras XX X  X XX XX X  X X X X X X X X X X X X X X X X X X  X 

2 Colusa XX X  X XX XX X  XX XX XX  X XX XXXXXXXXX  

1 Contra Costa XX X  X XX XX   XX XX XX  X XX  XXXXXXXXX 

Del Norte X XX X XX XX XX XX XX XX XX XX  X X  XXXXXXX

1 El Dorado X    X XX XX     X X  X XX XX    XXXX  X X 

1 Fresno XX XX X XX  X X  X  XX XX  X XX  XXXXX  X  X X

1 Glenn XX X  X XX XX X  X  X X  X XX XX  XXXXXXX   

1 Humboldt XX X X XX XX XX XX X X XX XX XXXXXXX XX

1 Imperial        X X    X X   X

1 Inyo-mono XX XX X XX XX   XX X XX X XX XXXXXXXX  X

1 Kern XX XX X XX XX X  XX XX X  X  XX XXXXX  XXX  X

Kings XX XX X XX XX X  XX XX XX  X XX XXXXXXXXXXX

1 Lake XX XX X XX XX XX X  XX XX XX XX  XXXXXXXX  

Lassen X X X X X X X X X X X X

3 Los Angeles   X X   X  X    X  X  XX XXXXX    X

1 Madera XX X  X XX XX   X  XX XX  X XX  XXXX  XXX  

1 Marin  X  X       X X   X XX     X  X  XXX  

1 Mariposa XX XX X XX XX   X  XX XX  X XX  XXXXXXX   

1 Mendocino XX XX X XX XX X  X X X X X X X X X X X X X X X X X X  X X

1 Merced XX XX X XX XX   X  XX XX  X XX  XXXXXXX   

1 Modoc X  XX X X   X  X XX X   X XX XX  XXXXX  XXXX

Monterey XX XX X XX XX  X X XX X  XX XX XXXXXXX XX

1 Napa X X  X XX XX X  X X  X XX XX XX  XXXXXXX  X 

1 Nevada X X  X XX XX  X XX XX XX XX XX XX  XXXXXXX 

1 Orange X  X X     X X    X  X   X

1 Placer  X X X XX XX   X X X X X X X X X X X X X X X X

1 Plumas-Sierra X  X     X X   X  X   X   X X X X X  X X  X  

1 Riverside XX XX XX XX   X XX X  X XX XXXXXXXXXXX

2 Sacramento  X X  X XX XX X  X  XX XX XX XX  XXXXXXXX  

1 San Benito XX X  X XX XX XX XX  X X X X X X X X X X X X X X X X X 

San Bernadino XX XX X XX XX  XX XX XX  X XX XXXXXXXXXXX

1 San Diego X                        

San Francisco XX XX X XX XX  X X  XX XX XX XX  XXXXXXXX  X

1 San Joaquin XX XX X XX X  X  X  X X X X X X X X X X X X X X X X X  

1 San Luis Obispo XX XX X XX XX  X X X X X X X X X X X X X X X X X X X X 

1 San Mateo X  X X     X XX  X XX XX X  XX X   XXX  X  X 

1 Santa Barbara XX X XX XX   X  XX X  X X  XXXXX  X  

Santa Clara XX XX X XX X  X  XX XX X  X X X X X X X X X  X X X X 

2 Santa Cruz  X XX X  X XX   XX XX XX  X XX  XXXXXXXXXX

1 Shasta X X X XX XX X X XX X XX XXXXXXX

1 Siskiyou XX X  X XX  X XX X  XX X XX  XXXXXXX  X X

1 Solano X  X   X   X  X    X  X X  X X   X X X X  X   

Sonoma X  XX X XX XX X  XX XX XX XX XX  XXXXXXXXX 

1 Stanislaus  X XX X XX XX X  X  XX XX X XX XXXXXXXXX  

1 Sutter XX X X XX XX XX XX XX XX XX XX XXXXXXXXXX 

1 Tehama  X X  X XX XX X  XX X  XX XX XX XXXXXXXXXX 

Trinity  N O P O L I C Y F O R B & C R A T E D W EEDS

1 Tulare XX XX X XX XX X  XX XX XX  X XX XXXXXXXXXXX

1 Tuolomne X                               

1 Ventura XX XX X XX XX   XX XX XX  X XX XXXXXXXXX  

Yolo XX XX X XX XX XX XX XX XX XX XX XXXXXXXXXX 

1 Yuba  X X X XX XX X  X XX XX  X XX XXXXXXXX

 X Reject

 Reject only when found in seed for planting or at the discretion of the Agricultural Commissioner 

1,2&3 – Bird seed infested with “B” or “C” rated weed seed: 1. Treat as shown in above chart 2. Release 3. Handle as feed grain