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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
Ophiostoma ips Blue Stain Fungus disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Ophiostoma piceae Blue stain disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Ophiostoma piceaperdum Laural Wilt disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Ophiostoma piliferum Blue stain disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Ophiostoma pluriannulatum Wood stain disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Peronosclerospora sacchari (philippinensis) Sugarcane Downy Mildew disease fungus not present low USDA Plant/Pest
Phellinus noxius Brown root rot disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Phellinus senex Stem decay disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Phlebia chrysocrea Wood decay disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Pseudocercospora timorensis Sweet Potato leaf spot disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Rhacodiella vitis Chestnut rot disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Sphaeropsis sapinea Diplodia Shoot Blight disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Stephanoderes hampei Coffee fungus disease fungus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Phytoplasma ryd-mlo Rice Yellow Dwarf disease phytoplasma VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Apscaviroid 1 Apple scar skin viroid disease virus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Apscaviroid 2 Citrus bent leaf viroid disease virus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Apscaviroid 3 Grapevine yellow speckle viroid disease virus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Unknown pathogenic virus 9 Grapevine vein yellow agent disease virus VALUE REQUIRED VALUE REQUIRED USDA Plant/Pest
Candidatus Liberibacter sp. Huanglongbing Disease of Citrus disease bacterium not present high USDA Plant/Pest
Adoretus spp. Adoretus spp. arthropod beetle not present high USDA Plant/Pest
Anomala sulcatula Anomala sulcatula arthropod beetle not present moderate USDA Plant/Pest
Capua tortrix Capua tortrix arthropod butterfly, moth not present low USDA Plant/Pest
Ceratitis spp. Ceratitis spp. arthropod fly limited high USDA Plant/Pest
Conoderus rufangulus Conoderus rufangulus arthropod beetle not present high USDA Plant/Pest
Euvarroa sinhai Euvarroa sinhai arthropod mite not present high USDA Plant/Pest
Laspeyresia spp. Laspeyresia spp. arthropod butterfly, moth not present high USDA Plant/Pest
Megalometis chilensis Megalometis chilensis arthropod beetle not present moderate USDA Plant/Pest
Proeulia spp. Proeulia spp. arthropod butterfly, moth not present low USDA Plant/Pest
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
Abutilon theophrasti velvet leaf plant herbaceous widespread n/a (already in CA) Weeds of CA
Amaranthus albus prostrate pigweed plant herbaceous widespread n/a (already in CA) Weeds of CA
Amaranthus hybridus slim amaranth plant herbaceous widespread n/a (already in CA) Weeds of CA
Amaranthus retroflexus redroot amaranth plant herbaceous widespread n/a (already in CA) Weeds of CA
Capsella bursa-pastoris shepard's purse plant herbaceous widespread n/a (already in CA) Weeds of CA
Conyza bonariensis asthmaweed plant herbaceous widespread n/a (already in CA) Weeds of CA
Cyperus difformis variable flatsedge plant herbaceous limited n/a (already in CA) Weeds of CA
Digitaria sanguinalis hairy crabgrass plant grass widespread n/a (already in CA) Weeds of CA
Echinochloa colona jungle rice plant grass widespread n/a (already in CA) Weeds of CA
Echinochloa oryzicola early watergrass plant grass limited n/a (already in CA) Weeds of CA
Echinochloa phyllopogon rice barnyardgrass plant grass limited n/a (already in CA) Weeds of CA
Erodium botrys broadleaf filaree plant herbaceous widespread n/a (already in CA) Weeds of CA
Erodium moschatum whitestem filaree plant herbaceous widespread n/a (already in CA) Weeds of CA
Kickxia elatine sharpleaf cancerwort plant herbaceous widespread n/a (already in CA) Weeds of CA
Lactuca serriola prickly lettuce plant herbaceous widespread n/a (already in CA) Weeds of CA
Lamium amplexicaule henbit deadnettle plant herbaceous widespread n/a (already in CA) Weeds of CA
Malva neglecta common mallow plant herbaceous widespread n/a (already in CA) Weeds of CA
Malva niaceensis bull mallow plant herbaceous widespread n/a (already in CA) Weeds of CA
Malva parviflora cheeseweed mallow plant herbaceous widespread n/a (already in CA) Weeds of CA
Malva sylvestris high mallow plant herbaceous widespread n/a (already in CA) Weeds of CA
Oxalis corniculata creeping woodsorrel plant herbaceous widespread n/a (already in CA) Weeds of CA
Polygonum arenastrum oval leaf knotweed plant herbaceous widespread n/a (already in CA) Weeds of CA
Portulaca oleracea common purslane plant herbaceous widespread n/a (already in CA) Weeds of CA
Raphanus raphanistrum wild radish plant herbaceous widespread n/a (already in CA) Weeds of CA
Senecio vulgaris old-man-in-the-spring plant herbaceous widespread n/a (already in CA) Weeds of CA
Setaria pumila yellow foxtail plant grass widespread n/a (already in CA) Weeds of CA
Setaria viridis green bristlegrass plant grass widespread n/a (already in CA) Weeds of CA
Solanum nigrum black nightshade plant herbaceous widespread n/a (already in CA) Weeds of CA