CISAC has compiled the list below of over 1,700 species known to be invasive in California or a potential threat for introduction to the state. Please use the comment form below to let us know about: taxa that should be added or removed; species information that you would change; and species that you think should be a high priority for having a scorecard completed (choose Review Scorecards to see the list of scorecards already drafted). Make sure to click Save. Previous comments are displayed at the bottom of the page.
Download Species List (.csv) (to open in a Spreadsheet program)
This data download is provided to aid in the review of the draft invasive species list. We discourage other use of this data until it has been revised and finalized.
| Scientific Name | Common Name | Type | Subtype | Extent |
Risk of Introduction |
First Source | |
|---|---|---|---|---|---|---|---|
| Nymphoides peltata | yellow floating heart | plant | herbaceous | limited | n/a (already in CA) | OR Weed List | |
| Ononis alopecuroides | foxtail restharrow | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Orobanche cooperi | Cooper's broomrape | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Orobanche ramosa | branched broomrape | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Panicum antidotale | blue panicgrass | plant | grass | limited | n/a (already in CA) | CDFA | |
| Physalis viscosa | grape groundcherry | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Pittosporum undulatum | Victorian box | plant | woody | limited | n/a (already in CA) | Med. plants list | |
| Polygonum polystachyum | Himalayan knotweed | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Polygonum sachalinense | Sakhalin knotweed | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Potentilla recta | sulfur cinquefoil | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Ranunculus acris | tall buttercup | plant | herbaceous | limited | n/a (already in CA) | MT Weed List | |
| Rorippa austriaca | Austrian field cress | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Rorippa sylvestris | creeping yellow field cress | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Saccharum ravennae | ravennagrass | plant | grass | limited | n/a (already in CA) | Cal-IPC list | |
| Salvia aethiopis | Mediterranean sage | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Salvinia molesta | giant salvinia | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Sapium sebiferum | Chinese tallowtree | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Secale cereale | cereal rye | plant | grass | widespread | n/a (already in CA) | WA Weed List | |
| Senecio jacobaea | tansy ragwort | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Solanum carolinense | Carolina horsenettle | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Solanum elaeagnifolium | silverleaf nightshade | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Solanum lanceolatum | lanceleaf nightshade | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Spartina anglica | common cordgrass | plant | grass | limited | n/a (already in CA) | Cal-IPC list | |
| Spartina patens | saltmeadow cord grass | plant | grass | limited | n/a (already in CA) | Cal-IPC list | |
| Stipa capensis | Mediterranean steppegrass | plant | grass | limited | n/a (already in CA) | Cal-IPC list | |
| Symphytum asperum | rough comfrey | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Ulmus pumila | Siberian elm | plant | woody | limited | n/a (already in CA) | Med. plants list | |
| Verbena litoralis | tall vervain | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Viscum album | European mistletoe | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Watsonia meriana | bulbil watsonia | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Zostera japonica | Japanese eelgrass | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Avena sterilis | animated oat | plant | grass | limited | n/a (already in CA) | APHIS | |
| Cenchrus longispinus | mat sandbur | plant | grass | widespread | n/a (already in CA) | CDFA | |
| Emex australis | three-cornered jack | plant | herbaceous | limited | n/a (already in CA) | USDA Plant/Pest | |
| Euphorbia dentata | toothed spurge | plant | herbaceous | limited | n/a (already in CA) | CO Weed List | |
| Hesperis matronalis | dame's rocket | plant | herbaceous | limited | n/a (already in CA) | CO Weed List | |
| Mirabilis nyctaginea | wild four o-clock | plant | herbaceous | limited | n/a (already in CA) | WA Weed List | |
| Nymphaea mexicana | banana waterlily | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Onopordum illyricum | Illyrian thistle | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Onopordum tauricum | Taurian thistle | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Tamarix chinensis | salt cedar | plant | woody | limited | n/a (already in CA) | CO Weed List | |
| Phytophthora ramorum | Sudden oak death | disease | oomycete | limited | n/a (already in CA) | APHIS OPIS | |
| Yersinia pestis | Bubonic Plague | disease | bacterium | widespread | n/a (already in CA) | NIAID | |
| Cuscuta japonica | Japanese dodder | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Flavivirus 2 | West Nile Virus | disease | virus | widespread | n/a (already in CA) | Iowa State Univ | |
| Mycobacterium bovis | Bovine tuberculosis | disease | bacterium | limited | n/a (already in CA) | Iowa State Univ | |
| Tilletia (neovossia) indica | Karnal bunt | disease | fungus | limited | n/a (already in CA) | EPPO | |
| Amorpha fruticosa | indigobush | plant | woody | limited | n/a (already in CA) | WA Weed List | |
| Ascophyllum nodosum | common brown algae | plant | algae | limited | n/a (already in CA) | Hoffman NOAA | |
| Brachypodium sylvaticum | perennial false-brome | plant | grass | limited | n/a (already in CA) | Cal-IPC list | |
| Centaurea jacea | brown knapweed | plant | herbaceous | limited | n/a (already in CA) | WA Weed List | |
| Centaurea stoebe ssp. micranthos | spotted knapweed | plant | herbaceous | limited | n/a (already in CA) | AZ Weed List | |
| Clematis vitalba | old man's beard | plant | herbaceous | limited | n/a (already in CA) | OR Weed List | |
| Ludwigia grandiflora | large flower primrose willow | plant | herbaceous | limited | n/a (already in CA) | WA Weed List | |
| Pennisetum ciliare | buffelgrass | plant | grass | limited | n/a (already in CA) | AZ Weed List | |
| Pennisetum villosum | feathergrass | plant | grass | limited | n/a (already in CA) | No list | |
| Phalaris arundinacea | reed canarygrass | plant | grass | limited | n/a (already in CA) | WA Weed List | |
| Poa pratensis | Kentucky bluegrass | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Pyracantha coccinea | pyracantha | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Pyracantha crenulata | pyracantha | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Silene latifolia ssp. alba | bladder campion | plant | herbaceous | limited | n/a (already in CA) | WA Weed List | |
| Vibrio cholerae | Cholera | disease | bacterium | limited | n/a (already in CA) | CIDRAP | |
| Puccinia horiana | Chrysanthemum White Rust | disease | fungus | limited | n/a (already in CA) | CACASA | |
| Uromyces transversalis | Gladiolus Rust | disease | fungus | limited | n/a (already in CA) | USDA pest | |
| Curtovirus CTVCP | Curly top virus | disease | virus | widespread | n/a (already in CA) | CDFA (reg. A) | |
| Acanalonia conica | green coneheaded planthopper | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Acanthococcus azaleae | azalea bark scale | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Acarapis woodi | honey bee tracheal mite | arthropod | widespread | n/a (already in CA) | USDA Plant/Pest | ||
| Aclerda tokionis | grass scale | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Adelphocoris rapidus | rapid plant bug | arthropod | scale, aphid | widespread | n/a (already in CA) | CDFA (reg. A) | |
| Aethina tumida | small hive beetle | arthropod | beetle | limited | n/a (already in CA) | CDFA (reg. B) | |
| Agrilus coxalis | golden spotted oak borer | arthropod | beetle | limited | n/a (already in CA) | pest of concern | |
| Aleuroclava aucubae | aucuba whitefly | arthropod | scale, aphid | widespread | n/a (already in CA) | CDFA (reg. B) | |
| Aleurotubus jelinekii | viburnum whitefly | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Aleyrodes proletella | cabbage whitefly | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Anastrepha serpentina | sapote fruit fly | arthropod | fly | limited | n/a (already in CA) | CDFA (reg. A) | |
| Aonidiella aurantii | California red scale | arthropod | scale, aphid | widespread | n/a (already in CA) | CDFA (reg. B) | |
| Apis mellifera scutellata | Africanized honeybee | arthropod | bee, wasp | limited | n/a (already in CA) | USDA Plant/Pest | |
| Araecerus coffeae | coffee bean weevil | arthropod | beetle | limited | n/a (already in CA) | CDFA (reg. B) | |
| Bactrocera oleae | Olive fruit fly | arthropod | fly | widespread | n/a (already in CA) | pest of concern | |
| Bactrocera spp. | exotic fruit fly | arthropod | fly | limited | n/a (already in CA) | CDFA (reg. A) | |
| Bagrada hilaris | Bagrada bug | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Carausius morosus | Indian walking stick | arthropod | stick insect | limited | n/a (already in CA) | CDFA (reg. B) | |
| Cataenococcus olivaceus | yucca mealybug | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Chelymorpha cassidea | argus tortoise beetle | arthropod | beetle | limited | n/a (already in CA) | CDFA (reg. B) | |
| Chionaspis americana | elm scurfy scale | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Chrysolina bankii | leaf beetle | arthropod | beetle | limited | n/a (already in CA) | CDFA (reg. B) | |
| Chrysophtharta m-fuscum | paropsine leaf beetle | arthropod | beetle | limited | n/a (already in CA) | CDFA (reg. B) | |
| Dasineura rhodophaga | rose midge | arthropod | fly | limited | n/a (already in CA) | CDFA (reg. B) | |
| Dendrothrips ornatus | privet thrips | arthropod | thrips | limited | n/a (already in CA) | CDFA (reg. B) | |
| Diaphania nitidalis | pickleworm | arthropod | butterfly, moth | limited | n/a (already in CA) | CDFA (reg. B) | |
| Diaphorina citri | Asian citrus psyllid | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. A) | |
| Diaprepes abbreviatus | Diaprepes root weevil | arthropod | beetle | limited | n/a (already in CA) | CDFA (reg. A) | |
| Diaspidiotus liquidambaris | sweet gum scale | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Drosophila suzukii | Spotted Wing Drosophila | arthropod | fly | widespread | n/a (already in CA) | CDFA Detect. Adv | |
| Dynaspidiotus britannicus | holly scale | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) | |
| Ectomyelois ceratoniae | carob moth | arthropod | butterfly, moth | limited | n/a (already in CA) | CDFA (reg. B) | |
| Epiphyas postvittana | Light brown apple moth | arthropod | butterfly, moth | limited | n/a (already in CA) | CDFA (reg. A) | |
| Epitrix tuberis | tuber flea beetle | arthropod | beetle | widespread | n/a (already in CA) | CDFA (reg. B) | |
| Eriococcus pittospori | pittosporum scale | arthropod | scale, aphid | limited | n/a (already in CA) | CDFA (reg. B) |
