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 Extentsort icon Risk of Introduction First Source
Epilobium hirsutum hairy willow herb plant herbaceous not present high WA Weed List
Euryops multifidus hawk's eye plant woody not present high AZ Weed List
Galega officinalis goatsrue plant herbaceous not present moderate USDA Plant/Pest
Glossostigma diandrum mud mat plant herbaceous not present low WA Weed List
Hedera hibernica English ivy plant woody not present high WA Weed List
Heracleum mantegazzianum giant hogweed plant herbaceous not present high CDFA
Hieracium atratum polar hawkweed plant herbaceous not present low WA Weed List
Hieracium caespitosum yellow hawkweed plant herbaceous not present high ID 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
Hieracium pilosella mouseear hawkweed plant herbaceous not present moderate OR Weed List
Hieracium piloselloides king devil hawkweed plant herbaceous not present moderate MT Weed List
Hieracium x floribundum yellow devil hawkweed plant herbaceous not present moderate MT Weed List
Homeria spp. cape tulip plant herbaceous not present low USDA Plant/Pest
Hydrocharis morsus-ranae European frog-bit plant herbaceous not present moderate WA Weed List
Hygrophila polysperma Miramar weed plant herbaceous not present high CDFA
Impatiens glandulifera policeman's helmet plant herbaceous not present moderate OR Weed List
Imperata brasiliensis Brazilian satintail plant grass not present low USDA Plant/Pest
Imperata cylindrica cogongrass plant grass not present moderate USDA Plant/Pest
Ischaemum rugosum murainograss plant grass not present low USDA Plant/Pest
Lagarosiphon major oxygenweed plant herbaceous not present moderate CDFA
Leptochloa chinensis Asian sprangletop plant grass not present moderate USDA Plant/Pest
Lepyrodiclis holosteoides false jagged-chickweed plant herbaceous not present low WA Weed List
Lespedeza cuneata sericea lespedeza plant herbaceous not present moderate CO Weed List
Limnophila sessiliflora blume (ambulia) plant herbaceous not present moderate CDFA
Ludwigia peruviana water primrose plant herbaceous not present moderate CDFA
Lythrum virgatum purple loosestrife plant herbaceous not present low MT Weed List
Melaleuca quinquenervia broadleaf paper bard tree plant woody not present low USDA Plant/Pest
Melastoma malabathricum Malabar melastome plant woody not present low APHIS
Mikania cordata mile-a-minute plant herbaceous not present low USDA Plant/Pest
Mikania micrantha bittervine plant herbaceous not present low USDA Plant/Pest
Milium vernale milium plant grass not present low ID Weed List
Mimosa diplotricha giant sensitive plant plant woody not present low OR Weed List
Mimosa invisa giant sensitive plant plant woody not present low USDA Plant/Pest
Mimosa pellita lollipop mimosa plant woody not present low OR Weed List
Mimosa pigra catclaw mimosa plant woody not present low USDA Plant/Pest
Monochoria hastata arrowleaf falsepickerelweed plant herbaceous not present low USDA Plant/Pest
Murdannia keisak marsh dew flower plant herbaceous not present moderate WA Weed List
Myosoton aquaticum giant chickweed plant herbaceous not present moderate CDFA
Najas minor slender-leaved naiad plant herbaceous not present moderate WA Weed List
Nardus stricta matgrass plant grass not present moderate ID Weed List
Nassella trichotoma serrated tussock plant grass not present low USDA Plant/Pest
Opuntia aurantiaca jointed prickly pear plant herbaceous not present low USDA Plant/Pest
Orobanche minor small broomrape plant herbaceous not present high OR Weed List
Oryza longistaminata red rice plant grass not present moderate USDA Plant/Pest
Oryza punctata red rice plant grass not present moderate USDA Plant/Pest
Paspalum scrobiculatum Kodo-millet plant grass not present low USDA Plant/Pest
Pennisetum macrourum African feathergrass plant grass not present low USDA Plant/Pest
Pennisetum pedicellatum Kyasumagrass plant grass not present low USDA Plant/Pest
Pennisetum polystachion missiongrass plant grass not present low USDA Plant/Pest
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
Pontederia cordata pickerelweed plant herbaceous not present moderate CDFA
Prosopis alpataco mesquite plant woody not present low USDA Plant/Pest
Prosopis argentina mesquite plant woody not present low USDA Plant/Pest
Prosopis articulata mesquite plant woody not present low USDA Plant/Pest
Prosopis burkartii mesquite plant woody not present low USDA Plant/Pest
Prosopis caldenia mesquite plant woody not present low USDA Plant/Pest
Prosopis calingastana cusqui plant woody not present low USDA Plant/Pest
Prosopis campestris mesquite plant woody not present low USDA Plant/Pest
Prosopis castellanosii mesquite plant woody not present low USDA Plant/Pest
Prosopis denudans mesquite plant woody not present low USDA Plant/Pest
Prosopis elata mesquite plant woody not present low USDA Plant/Pest
Prosopis farcta mesquite plant woody not present low USDA Plant/Pest
Prosopis ferox mesquite plant woody not present low USDA Plant/Pest
Prosopis fiebrigii mesquite plant woody not present low USDA Plant/Pest
Prosopis hassleri mesquite plant woody not present low USDA Plant/Pest
Prosopis humilis mesquite plant woody not present low USDA Plant/Pest
Prosopis kuntzei mesquite plant woody not present low USDA Plant/Pest
Prosopis pallida mesquite plant woody not present low USDA Plant/Pest
Prosopis palmeria mesquite plant woody not present low USDA Plant/Pest
Prosopis reptans mesquite plant woody not present low USDA Plant/Pest
Prosopis rojasiana mesquite plant woody not present low USDA Plant/Pest
Prosopis ruizlealii mesquite plant woody not present low USDA Plant/Pest
Prosopis ruscifolia mesquite plant woody not present low USDA Plant/Pest
Prosopis sericantha mesquite plant woody not present low USDA Plant/Pest
Prosopis torquata mesquite plant woody not present low USDA Plant/Pest
Pueraria montana var. lobata kudzu plant herbaceous not present moderate OR Weed List
Rottboellia cochinchinensis itchgrass plant grass not present moderate USDA Plant/Pest
Rubus moluccanus wild raspberry plant woody not present low USDA Plant/Pest
Saccharum spontaneum wild sugarcane plant grass not present low USDA Plant/Pest
Sagittaria graminea grass-leaved arrowhead plant herbaceous not present high WA Weed List
Sagittaria sagittifolia arrowhead plant herbaceous not present low USDA Plant/Pest
Salvia pratensis meadow clary plant herbaceous not present moderate WA Weed List
Salvia sclarea clary sage plant herbaceous not present moderate WA Weed List
Senecio inaequidens South African ragwort plant woody not present low USDA Plant/Pest
Senecio linearifolius narrowleaf ragwort plant herbaceous not present low CDFA
Senecio madagascariensis Madagascar ragwort plant herbaceous not present moderate USDA Plant/Pest
Setaria pumila ssp. pallidefusca cattail grass plant grass not present moderate USDA Plant/Pest
Solanum tampicense wetland nightshade plant woody not present low USDA Plant/Pest
Solanum torvum turkeyberry plant woody not present low USDA Plant/Pest
Solanum viarum tropical soda apple plant herbaceous not present low USDA Plant/Pest
Sorghum almum Columbus grass plant grass not present moderate NV Weed List
Sorghum propinquum sorghum plant grass not present low NV Weed List
Spermacoce alata winged false buttonweed plant herbaceous not present low USDA Plant/Pest
Striga spp. witchweed plant herbaceous not present high USDA Plant/Pest
Thymelaea passerina spurge flax plant herbaceous not present moderate WA Weed List
Trapa bicornis water caltrap plant herbaceous not present low WA Weed List
Trapa natans water-chestnut plant herbaceous not present moderate AZ Weed List
Tridax procumbens coat buttons plant herbaceous not present low USDA Plant/Pest