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 | |
|---|---|---|---|---|---|---|---|
| Ludwigia peploides ssp. montevidensis | creeping water-primrose | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Lythrum hyssopifolium | hyssop loosestrife | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Lythrum salicaria | purple loosestrife | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| 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 | |
| Marrubium vulgare | white horehound | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Medicago polymorpha | California burclover | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Mentha pulegium | pennyroyal | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Mesembryanthemum crystallinum | crystalline iceplant | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Myoporum laetum | myoporum | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Myosotis latifolia | common forget-me-not | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Myriophyllum aquaticum | parrotfeather | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Myriophyllum spicatum | Eurasian watermilfoil | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Nicotiana glauca | tree tobacco | plant | woody | widespread | n/a (already in CA) | Cal-IPC list | |
| Olea europaea | olive | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Onopordum acanthium | Scotch thistle | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Oxalis corniculata | creeping woodsorrel | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Oxalis pes-caprae | Bermuda buttercup | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Panicum miliaceum | wild proso millet | plant | grass | limited | n/a (already in CA) | CO Weed List | |
| Parentucellia viscosa | yellow glandweed | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Pennisetum clandestinum | kikuyugrass | plant | grass | widespread | n/a (already in CA) | OR Weed List | |
| Pennisetum setaceum | crimson fountaingrass | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Phalaris aquatica | hardinggrass | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Phoenix canariensis | Canary Island date palm | plant | woody | limited | n/a (already in CA) | No list | |
| Phytolacca americana | common pokeweed | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Picris echioides | bristly oxtongue | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Piptatherum miliaceum | smilograss | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Plantago lanceolata | buckhorn plantain | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Polygonum arenastrum | oval leaf knotweed | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Polygonum cuspidatum | Japanese knotweed | plant | woody | limited | n/a (already in CA) | CDFA | |
| Polypogon monspeliensis and subspp. | rabbitfoot polypogon | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Portulaca oleracea | common purslane | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Potamogeton crispus | curlyleaf pondweed | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Proboscidea louisianica | unicorn-plant | plant | herbaceous | widespread | n/a (already in CA) | WA Weed List | |
| Prosopis velutina | mesquite | plant | woody | limited | n/a (already in CA) | USDA Plant/Pest | |
| Prunus cerasifera | cherry plum | plant | woody | widespread | n/a (already in CA) | Cal-IPC list | |
| Pyracantha angustifolia | pyracantha | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Ranunculus repens | creeping buttercup | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Raphanus raphanistrum | wild radish | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Raphanus sativus | radish | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Retama monosperma | bridal broom | plant | woody | limited | n/a (already in CA) | CDFA | |
| Ricinus communis | castorbean | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Robinia pseudoacacia | black locust | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Rubus armeniacus | Himalaya blackberry | plant | woody | widespread | n/a (already in CA) | CDFA | |
| Rumex acetosella | red sorrel | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Rumex crispus | curly dock | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Salsola paulsenii | barbwire Russian-thistle | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Salsola soda | oppositeleaf Russian thistle | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Salsola tragus | Russian-thistle | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Saponaria officinalis | bouncingbet | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Schinus molle | Peruvian peppertree | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Schinus terebinthifolius | Brazilian peppertree | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Schismus arabicus | mediterraneangrass | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Schismus barbatus | mediterraneangrass | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Senecio vulgaris | old-man-in-the-spring | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Sesbania punicea | red sesbania | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Setaria faberi | giant foxtail | plant | grass | widespread | n/a (already in CA) | CDFA | |
| 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 | |
| Silybum marianum | blessed milkthistle | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Sinapis arvensis | wild mustard | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Sisymbrium irio | London rocket | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| 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 | |
| Solanum rostratum | buffalobur | plant | herbaceous | limited | n/a (already in CA) | ID Weed List | |
| Soliva sessilis | lawnweed | plant | herbaceous | widespread | n/a (already in CA) | WA Weed List | |
| Sonchus oleraceaus | common sowthistle | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Sorghum bicolor | perennial sweet Sudan | plant | grass | limited | n/a (already in CA) | NV Weed List | |
| Sorghum halepense | johnsongrass | plant | grass | widespread | n/a (already in CA) | WA Weed List | |
| Spartina alterniflora | smooth cordgrass and hybrids | plant | grass | limited | n/a (already in CA) | Cal-IPC list | |
| Spartina alterniflora x foliosa hybrids | smooth cordgrass and hybrids | plant | grass | limited | n/a (already in CA) | Cal-IPC list | |
| Spartina densiflora | dense-flowered cordgrass | plant | grass | limited | n/a (already in CA) | Cal-IPC list | |
| Spartium junceum | Spanish broom | plant | woody | widespread | n/a (already in CA) | Cal-IPC list | |
| Stellaria media | common chickweed | plant | herbaceous | widespread | n/a (already in CA) | Weeds of CA | |
| Taeniatherum caput-medusae | medusahead | plant | grass | widespread | n/a (already in CA) | CDFA | |
| Tamarix aphylla | athel tamarisk | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Tamarix parviflora | smallflower tamarisk | plant | woody | widespread | n/a (already in CA) | Cal-IPC list | |
| Tamarix ramosissima | saltcedar | plant | woody | widespread | n/a (already in CA) | Cal-IPC list | |
| Tanacetum vulgare | common tansy | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Torilis arvensis | hedgeparsley | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Tribulus terrestris | puncturevine | plant | herbaceous | widespread | n/a (already in CA) | CDFA | |
| Trifolium hirtum | rose clover | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Ulex europaeus | gorse | plant | woody | limited | n/a (already in CA) | CDFA | |
| Undaria pinnatifida | wakame | plant | algae | widespread | n/a (already in CA) | Cal-IPC list | |
| Verbascum blattaria | moth mullein | plant | herbaceous | limited | n/a (already in CA) | CO Weed List | |
| Verbascum thapsus | common mullein | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| 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 | |
| Vinca major | big periwinkle | plant | herbaceous | widespread | n/a (already in CA) | Cal-IPC list | |
| Vulpia myuros | rattail fescue | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Washingtonia robusta | Mexican fan palm | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Zantedeschia aethiopica | calla lily | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Cenchrus incertus | coast sandbur | plant | grass | widespread | n/a (already in CA) | CDFA | |
| Cuscuta approximata | smoothseed alfalfa dodder | plant | herbaceous | limited | n/a (already in CA) | WA Weed List | |
| Elytrigia repens | quackgrass | plant | grass | widespread | n/a (already in CA) | CDFA | |
| Acacia dealbata | silver wattle | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Acacia melanoxylon | black acacia | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Acacia paradoxa | kangaroothorn | plant | woody | limited | n/a (already in CA) | CDFA |
