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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 Sourcesort icon
Solanum nigrum black nightshade plant herbaceous widespread n/a (already in CA) Weeds of CA
Solanum physalifolium hoe nightshade plant herbaceous widespread n/a (already in CA) Weeds of CA
Sonchus oleraceaus common sowthistle plant herbaceous widespread n/a (already in CA) Weeds of CA
Stellaria media common chickweed plant herbaceous widespread n/a (already in CA) Weeds of CA
Vicia sativa garden vetch plant herbaceous widespread n/a (already in CA) Weeds of CA
Vicia villosa hairy vetch plant herbaceous widespread n/a (already in CA) Weeds of CA
Daucus carota wild carrot plant herbaceous widespread n/a (already in CA) WA Weed List
Proboscidea louisianica unicorn-plant plant herbaceous widespread n/a (already in CA) WA Weed List
Soliva sessilis lawnweed plant herbaceous widespread n/a (already in CA) WA Weed List
Sorghum halepense johnsongrass plant grass widespread n/a (already in CA) WA Weed List
Cuscuta approximata smoothseed alfalfa dodder plant herbaceous limited n/a (already in CA) WA Weed List
Aegilops cylindrica jointed goatgrass plant grass widespread n/a (already in CA) WA Weed List
Alopecurus myosuroides blackgrass plant grass limited n/a (already in CA) WA Weed List
Anchusa arvensis annual bugloss plant herbaceous limited n/a (already in CA) WA Weed List
Centaurea nigra black knapweed plant herbaceous limited n/a (already in CA) WA Weed List
Hieracium aurantiacum orange hawkweed plant herbaceous not present high WA Weed List
Nymphaea odorata fragrant waterlily plant herbaceous limited n/a (already in CA) WA Weed List
Secale cereale cereal rye plant grass widespread n/a (already in CA) WA Weed List
Echium vulgare common viper's bugloss plant herbaceous not present high WA Weed List
Mirabilis nyctaginea wild four o-clock plant herbaceous limited n/a (already in CA) WA Weed List
Amorpha fruticosa indigobush plant woody limited n/a (already in CA) WA Weed List
Centaurea jacea brown knapweed plant herbaceous limited n/a (already in CA) WA Weed List
Ludwigia grandiflora large flower primrose willow plant herbaceous limited n/a (already in CA) WA Weed List
Lysimachia vulgaris garden loosestrife plant herbaceous not present high WA Weed List
Phalaris arundinacea reed canarygrass plant grass limited n/a (already in CA) WA Weed List
Silene latifolia ssp. alba bladder campion plant herbaceous limited n/a (already in CA) WA Weed List
Anthriscus sylvestris wild chervil plant herbaceous not present high WA Weed List
Bryonia alba white bryony plant herbaceous not present moderate WA Weed List
Butomus umbellatus flowering rush plant herbaceous not present high WA Weed List
Centaurea macrocephala bighead knapweed plant herbaceous not present moderate WA Weed List
Chaenorhinum minus dwarf snapdragon plant herbaceous not present moderate WA Weed List
Crassula helmsii Australian swamp stonecrop plant herbaceous not present low WA Weed List
Epilobium hirsutum hairy willow herb plant herbaceous not present high WA Weed List
Glossostigma diandrum mud mat plant herbaceous not present low WA Weed List
Hedera hibernica English ivy plant woody not present high WA Weed List
Hieracium atratum polar hawkweed plant herbaceous not present low WA Weed List
Hieracium glomeratum queen devil hawkweed plant herbaceous not present low WA Weed List
Hieracium laevigatum smooth hawkweed plant herbaceous not present low WA Weed List
Hydrocharis morsus-ranae European frog-bit plant herbaceous not present moderate WA Weed List
Lepyrodiclis holosteoides false jagged-chickweed plant herbaceous not present low WA Weed List
Murdannia keisak marsh dew flower plant herbaceous not present moderate WA Weed List
Najas minor slender-leaved naiad plant herbaceous not present moderate WA Weed List
Picris hieracioides hawkweed oxtongue plant herbaceous not present moderate WA Weed List
Polygonum x bohemicum Bohemian knotweed plant herbaceous not present moderate WA Weed List
Sagittaria graminea grass-leaved arrowhead plant herbaceous not present high WA Weed List
Salvia pratensis meadow clary plant herbaceous not present moderate WA Weed List
Salvia sclarea clary sage plant herbaceous not present moderate WA Weed List
Thymelaea passerina spurge flax plant herbaceous not present moderate WA Weed List
Trapa bicornis water caltrap plant herbaceous not present low WA Weed List
Utricularia inflata swollen bladderwort plant herbaceous not present moderate WA Weed List
Xanthomonas anoxopodis pv. citri Citrus Canker disease bacterium not present high USDA Plant/Pest
Prosopis velutina mesquite plant woody limited n/a (already in CA) USDA Plant/Pest
Commelina benghalensis Benghal dayflower plant herbaceous limited n/a (already in CA) USDA Plant/Pest
Monochoria vaginalis heartshape false pickerelweed plant herbaceous limited n/a (already in CA) USDA Plant/Pest
Prosopis strombulifera creeping mesquite plant woody not present moderate USDA Plant/Pest
Salvinia auriculata giant salvinia plant herbaceous not present low USDA Plant/Pest
Emex australis three-cornered jack plant herbaceous limited n/a (already in CA) USDA Plant/Pest
Ottelia alismoides ducklettuce plant herbaceous not present high USDA Plant/Pest
Candidatus Liberibacter africanus Huanglongbing disease of citrus-African strain disease bacterium not present low USDA Plant/Pest
Candidatus Liberibacter americanus Huanglongbing disease of Citrus-Americas Strain disease bacterium not present moderate USDA Plant/Pest
Candidatus Liberibacter asiaticus Huanglongbing disease of Citrus-Asian Strain disease bacterium not present high USDA Plant/Pest
Ceratocystis fagacearum Oak wilt disease fungus not present moderate USDA Plant/Pest
Drymaria arenarioides lightening weed plant herbaceous not present moderate USDA Plant/Pest
Acarapis woodi honey bee tracheal mite arthropod widespread n/a (already in CA) USDA Plant/Pest
Acrolepiopsis assectella leek moth arthropod butterfly, moth not present high USDA Plant/Pest
Adoxophyes orana summer Fruit Tortrix Moth arthropod butterfly, moth not present high USDA Plant/Pest
Amphitetranychus viennensis fruit tree spider mite arthropod mite not present high USDA Plant/Pest
Anastrepha grandis South American cucurbit fruit fly arthropod fly not present high USDA Plant/Pest
Apis mellifera capensis Cape honeybee arthropod bee, wasp not present high USDA Plant/Pest
Apis mellifera scutellata Africanized honeybee arthropod bee, wasp limited n/a (already in CA) USDA Plant/Pest
Argyrotaenia pulchellana grey red-barred twist arthropod butterfly, moth not present low USDA Plant/Pest
Brachycerus spp. garlic beetles arthropod beetle not present moderate USDA Plant/Pest
Brevipalpus chilensis false grape mite arthropod mite not present high USDA Plant/Pest
Carposina niponensis peach fruit moth arthropod butterfly, moth not present low USDA Plant/Pest
Chrysis spp. cuckoo wasps arthropod bee, wasp not present moderate USDA Plant/Pest
Coelioxys spp. cuckoo bees arthropod bee, wasp not present low USDA Plant/Pest
Conogethes punctiferalis yellow peach moth arthropod butterfly, moth not present moderate USDA Plant/Pest
Conopomorpha cramerella cocoa pod borer arthropod butterfly, moth not present low USDA Plant/Pest
Conotrachelus aguacatae small avocado seed weevil arthropod beetle not present high USDA Plant/Pest
Conotrachelus spp. hidden snout weevils arthropod beetle not present moderate USDA Plant/Pest
Copturus aguacatae avocado stem weevil arthropod beetle not present high USDA Plant/Pest
Cryptorhynchus mangiferae mango seed weevil arthropod beetle not present low USDA Plant/Pest
Curculio elephas chestnut weevil arthropod beetle not present high USDA Plant/Pest
Curculio nucum hazelnut weevil arthropod beetle not present high USDA Plant/Pest
Cydia funebrana red plum maggot arthropod butterfly, moth not present high USDA Plant/Pest
Dryocosmus kuriphilus chestnut gall wasp arthropod bee, wasp not present high USDA Plant/Pest
Dyspessa ulula onion carpenter worm arthropod butterfly, moth not present moderate USDA Plant/Pest
Earias fabia spotted bollworm arthropod butterfly, moth not present moderate USDA Plant/Pest
Elytroteinus subtruncatus Fijian ginger weevil arthropod beetle not present moderate USDA Plant/Pest
Eriophyes gossypii cotton blister mite arthropod mite not present high USDA Plant/Pest
Eriophyes litchii lychee erinose mite arthropod mite not present moderate USDA Plant/Pest
Euscepes postfasciatus Indian sweetpotato weevil arthropod beetle not present high USDA Plant/Pest
Exosoma lusitanica leaf beetle arthropod beetle not present high USDA Plant/Pest
Furcaspis oceanica coconut red scale arthropod scale, aphid not present high USDA Plant/Pest
Haplothrips chinensis thrips arthropod thrips not present high USDA Plant/Pest
Hemimene juliana nut fruit tortrix arthropod butterfly, moth not present low USDA Plant/Pest
Holotrichia mindanaona white grub arthropod beetle not present moderate USDA Plant/Pest
Hypothenemus hampei coffee berry borer arthropod beetle not present moderate USDA Plant/Pest
Icerya aegyptiaca Egyptian fluted scale arthropod scale, aphid not present moderate USDA Plant/Pest
Leptocorisa acuta rice seed bug arthropod scale, aphid not present moderate USDA Plant/Pest