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Encycloweedia: Data Sheets
Weeds Sorted by Pest Rating
"A" – Eradication, containment, rejection, or other holding action at the state-county level. Quarantine interceptions to be rejected or treated at any point in the state. | |
Acaena novae-zelandiae | biddy-biddy |
Acaena pallida | pale biddy-biddy |
Achnatherum brachychaetum | punagrass |
Alhagi maurorum | camelthorn |
Alternanthera philoxeroides | alligatorweed |
Arctotheca calendula | capeweed |
Carduus acanthoides | plumeless thistle |
Carduus nutans | musk thistle |
Carthamus leucocaulos | whitestem distaff thistle |
Centaurea diffusa | diffuse knapweed |
Centaurea iberica | Iberian starthistle |
Centaurea maculosa | spotted knapweed |
Centaurea squarrosa | squarrose knapweed |
Chondrilla juncea | skeletonweed |
Cirsium ochrocentrum | yellowspine thistle |
Cirsium undulatum | wavyleaf thistle |
Crupina vulgaris | bearded creeper |
Cucumis melo var. dudaim | dudaim melon |
Cuscuta reflexa | giant dodder |
Euphorbia esula | leafy spurge |
Euphorbia serrata | serrate spurge |
Halimodendron halodendron | Russian salttree |
Halogeton glomeratus | halogeton |
Helianthus ciliaris | blueweed |
Heteropogon contortus | tanglehead |
Hydrilla verticillata | hydrilla |
Linaria genistifolia spp. dalmatica | Dalmatian toadflax |
Onopordum acanthium | Scotch thistle |
Onopordum tauricum | Taurian thistle |
Onopordum illyricum | Illyrian thistle |
Orobanche cooperi | Cooper's broomrape |
Orobanche ramosa | branched broomrape |
Peganum harmala | harmel |
Physalis longifolia | long-leaf groundcherry |
Prosopis strombulifera | creeping mesquite |
Salsola vermiculata | wormleaf salsola |
Salvia virgata | southern meadow sage |
Scolymus hispanicus | golden thistle |
Solanum cardiophyllum | heartleaf nightshade |
Solanum dimidiatum | Torrey's nightshade |
Sonchus arvensis | perennial sowthistle |
Sphaerophysa salsula | Austrian peaweed |
Striga asiatica | witchweed |
Tagetes minuta | wild marigold |
Zygophyllum fabago | Syrian beancaper |
"B" – Eradication, containment, control or other holding action at the discretion of the commissioner. | |
Acacia paradoxa | kangaroothorn |
Acroptilon repens | Russian knapweed |
Aegilops cylindrica | jointed goatgrass |
Aegilops ovata | ovate goatgrass |
Aegilops triuncialis | barb goatgrass |
Aeschynomene rudis | rough jointvetch |
Allium paniculatum | panicled onion |
Allium vineale | wild garlic |
Ambrosia trifida | giant ragweed |
Araujia sericifera | bladderflower |
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 |
Cucumis myriocarpus | paddy melon |
Cynara cardunculus | artichoke thistle |
Cyperus esculentus | yellow nutsedge |
Cyperus rotundus | purple nutsedge |
Elytrigia repens | quackgrass |
Euphorbia oblongata | oblong spurge |
Gaura coccinea | scarlet gaura |
Gaura drummondii | Drummonds 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 |
Nothoscordum inodorum | false garlic |
Nymphaea mexicana | banana waterlily |
Oryza rufipogon | Perennial wild red rice |
Panicum antidotale | blue panicgrass |
Physalis viscosa | grape groundcherry |
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 |
Symphytum asperum | rough comfrey |
Ulex europaeus | Gorse |
Viscum album | European mistletoe |
"C" – State endorsed holding action and eradication only when found in a nursery; action to retard spread outside of nurseries at the discretion of the commissioner; reject only when found in a cropseed for planting or at the discretion of the commissioner. | |
Carduus pycnocephalus | Italian thistle |
Carduus tenuiflorus | slenderflowered thistle |
Cenchrus echinatus | southern sandbur |
Cenchrus incertus | coast sandbur |
Cenchrus longispinus | mat sandbur |
Centaurea solstitialis | yellow starthistle |
Convolvulus arvensis | field bindweed |
Cuscuta spp. except C. reflexa | dodder |
Cynodon spp. and hybrids | bermudagrass |
Cytisus scoparius | Scotch broom |
Genista monspessulana | French broom |
Hyoscyamus niger | black henbane |
Hypericum perforatum | Klamathweed |
Iris douglasiana | Douglas iris |
Iris missouriensis | western blue flag |
Iva axillaris | poverty weed |
Malvella leprosa | alkali mallow |
Pennisetum clandestinum | Kikuyugrass |
Polygonum amphibium var. emersum | kelp |
Salsola tragus | common Russianthistle |
Salsola paulsenii | barbwire Russianthistle |
Sorghum halepense | Johnsongrass |
Taeniatherum caput-medusae | medusahead |
Tribulus terrestris | puncturevine |
"Q" – Temporary "A" action outside of nurseries at the state-county level pending determination of a permanent rating. Species on List 2, "Federal Noxious Weed Regulation" are given an automatic "Q" rating when evaluated in California | |
Cabomba caroliniana | Carolina fanwort |
Cirsium japonicum | Japanese thistle |
Euphorbia terracina | Geraldton carnation weed |
Limnobium spongia ssp. laevigatum spongia |
S. American spongeplant N. American spongeplant |
Limnophila indica | ambulia |
Ononis alopecuroides | foxtail restharrow |
Pistia stratiotes | water lettuce |
Rorippa sylvestris | creeping yellow field cress |
Salsola collina | spineless Russianthistle |
Salvinia auriculata complex | salvinia |