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 | |
|---|---|---|---|---|---|---|---|
| Acaena novae-zelandiae | biddy-biddy | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Acaena pallida | pale biddy-biddy | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Achnatherum brachychaetum | punagrass | plant | grass | limited | n/a (already in CA) | CDFA | |
| Aegilops cylindrica | jointed goatgrass | plant | grass | widespread | n/a (already in CA) | WA Weed List | |
| Aegilops ovata | ovate goatgrass | plant | grass | limited | n/a (already in CA) | CDFA | |
| Aeschynomene rudis | rough jointvetch | plant | woody | limited | n/a (already in CA) | CDFA | |
| Albizia lophantha | plume acacia | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Alhagi maurorum | camelthorn | plant | woody | limited | n/a (already in CA) | NV Weed List | |
| Allium paniculatum | panicled onion | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Allium vineale | wild garlic | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Alopecurus myosuroides | blackgrass | plant | grass | limited | n/a (already in CA) | WA Weed List | |
| Alternanthera philoxeroides | alligator weed | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Ambrosia artemisifolia | ragweed | plant | herbaceous | widespread | n/a (already in CA) | OR Weed List | |
| Ambrosia trifida | giant ragweed | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Anchusa arvensis | annual bugloss | plant | herbaceous | limited | n/a (already in CA) | WA Weed List | |
| Anchusa officinalis | common bugloss | plant | herbaceous | limited | n/a (already in CA) | OR Weed List | |
| Anthemis arvensis | scentless chamomile | plant | herbaceous | limited | n/a (already in CA) | CO Weed List | |
| Araujia sericifera | bladderflower | plant | woody | limited | n/a (already in CA) | CDFA | |
| Arctotheca calendula (fertile) | fertile capeweed | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Asparagus asparagoides | bridal creeper | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Asphodelus fistulosus | onionweed | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Brachypodium distachyon | annual false-brome | plant | grass | widespread | n/a (already in CA) | Cal-IPC list | |
| Buddleja davidii | butterflybush | plant | woody | limited | n/a (already in CA) | OR Weed List | |
| Cardaria chalepensis | lens-podded white-top | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Carduus acanthoides | plumeless thistle | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Carduus nutans | musk thistle | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Carthamus baeticus | smooth distaff thistle | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Centaurea iberica | Iberian starthistle | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Centaurea nigra | black knapweed | plant | herbaceous | limited | n/a (already in CA) | WA Weed List | |
| Centaurea sulphurea | Sicilian thistle | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Chondrilla juncea | rush skeletonweed | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Chorispora tenella | blue mustard | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Cirsium japonicum | Japanese thistle | plant | herbaceous | not present | low | CDFA | |
| Cirsium ochrocentrum | yellowspine thistle | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Cirsium undulatum | wavyleaf thistle | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Commelina benghalensis | Benghal dayflower | plant | herbaceous | limited | n/a (already in CA) | USDA Plant/Pest | |
| Cordyline australis | giant dracaena | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Coronopus squamatus | swinecress | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Crocosmia x crocosmiiflora | montbretia | plant | herbaceous | limited | n/a (already in CA) | Cal-IPC list | |
| Crupina vulgaris | common crupina | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Cucumis melo var. duriam | dudaim melon | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Cucumis myriocarpus | paddy melon | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Cuscuta reflexa | giant dodder | plant | herbaceous | not present | low | CDFA | |
| Echium plantagineum | Paterson's curse | plant | herbaceous | limited | n/a (already in CA) | OR Weed List | |
| Ehrharta longiflora | long-flowered veldtgrass | plant | grass | limited | n/a (already in CA) | Cal-IPC list | |
| Erigeron karvinskianus | Mexican daisy | plant | herbaceous | limited | n/a (already in CA) | Med. plants list | |
| Eucalyptus camaldulensis | red gum | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Euphorbia esula | leafy spurge | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Euphorbia oblongata | oblong spurge | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Euphorbia terracina | carnation spurge | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Gaura drummondii | Drummond's gaura | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Geranium robertianum | Herb-robert | plant | herbaceous | limited | n/a (already in CA) | Med. plants list | |
| Gleditsia triacanthus | honey locust | plant | woody | limited | n/a (already in CA) | Med. plants list | |
| Gypsophila paniculata | baby's breath | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Halogeton glomeratus | halogeton | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Helichrysum petiolare | licoriceplant | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Hieracium aurantiacum | orange hawkweed | plant | herbaceous | not present | high | WA Weed List | |
| Hydrilla verticillata | hydrilla | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Hyoscyamus niger | black henbane | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Hypericum canariense | Canary Island hypericum | plant | woody | limited | n/a (already in CA) | CDFA | |
| Ilex aquifolium | English holly | plant | woody | limited | n/a (already in CA) | Cal-IPC list | |
| Ipomoea triloba | three-cornered morning glory | plant | herbaceous | limited | n/a (already in CA) | AZ Weed List | |
| Limnobium laevigatum | spongeplant | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Limnophila indica | ambulia | plant | herbaceous | not present | moderate | CDFA | |
| Linaria genistifolia ssp. dalmatica | Dalmatian toadflax | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Malephora crocea | coppery mesembryanthemum | plant | herbaceous | limited | n/a (already in CA) | Med. plants list | |
| Maytenus boaria | mayten | plant | woody | limited | n/a (already in CA) | Med. plants list | |
| Monochoria vaginalis | heartshape false pickerelweed | plant | herbaceous | limited | n/a (already in CA) | USDA Plant/Pest | |
| Muhlenbergia schreberi | nimblewill | plant | grass | limited | n/a (already in CA) | CDFA | |
| Nerium oleander | oleander | plant | woody | limited | n/a (already in CA) | Med. plants list | |
| Nothoscordum inodorum | false garlic | plant | herbaceous | limited | n/a (already in CA) | CDFA | |
| Nymphaea odorata | fragrant waterlily | plant | herbaceous | limited | n/a (already in CA) | WA Weed List | |
| 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 | |
| Peganum harmala | harmel | plant | herbaceous | not present | high | No list | |
| 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 | |
| Prosopis strombulifera | creeping mesquite | plant | woody | not present | moderate | USDA Plant/Pest | |
| 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 auriculata | giant salvinia | plant | herbaceous | not present | low | USDA Plant/Pest | |
| 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 | |
| Sargassum horneri | Asian seaweed | plant | algae | limited | moderate | Hoffman NOAA | |
| 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 |
