Source: California Invasive Plant Council

URL of this page:

California Invasive Plant Inventory Database

Background: Information on how plants were listed and how the Inventory compares to other risk assessments and lists can be found here. Information about Cal-IPC ratings can be found here.

2017 Update: New species were added, including some in a new "watch" category. Information here.

Download: You can download the Inventory, with all fields (XLS or CSV), or only the scoring fields (XLS or CSV).

"Watch" plants: Plants that scored "high risk" when evaluated for risk of becoming invasive in California in the future (Download pdf). Background on assessment can be found here.

Native CA species: A few native species have become invasive outside their natural range in California and cause negative impacts in their introduced range (Download pdf).

Links in table: PAF = Plant Assessment Form with detailed information. Profile = Plant Profile webpage with additional links. CalWeedMapper = statewide map.

Sorting: Click on a column heading to sort the table by that column.


Species Links Common Names Rating Alert
Acacia dealbata silver wattle Moderate
Acacia melanoxylon blackwood acacia Limited
Acroptilon repens Russian knapweed, hardheads Moderate
Aegilops triuncialis barb goatgrass High
Ageratina adenophora eupatory, croftonweed Moderate
Agrostis avenacea Pacific bentgrass Limited
Agrostis stolonifera creeping bent, carpet bent Limited
Ailanthus altissima tree-of-heaven, Chinese sumac Moderate
Alhagi maurorum camelthorn Moderate
Alternanthera philoxeroides alligatorweed High
Ammophila arenaria European beachgrass High
Anthoxanthum odoratum sweet vernal grass, vanilla grass Moderate
Arctotheca calendula (fertile forms) fertile capeweed Moderate
Arctotheca prostrata capeweed, South African capeweed Moderate
Arundo donax giant reed High
Asparagus asparagoides bridal creeper, African asparagus fern Moderate
Asphodelus fistulosus onion weed, asphodel Moderate
Atriplex semibaccata Australian saltbush, berry saltbush Moderate
Avena barbata slender oat Moderate
Avena fatua wild oats Moderate
Bassia hyssopifolia five-hook bassia, five horn bassia Limited
Bellardia trixago bellardia, mediterranean lineseed Limited
Brachypodium distachyon annual false-brome, false brome Moderate
Brachypodium sylvaticum slender false-brome, false-brome Moderate
Brassica nigra black mustard Moderate
Brassica rapa field mustard, turnip Limited
Brassica tournefortii Sahara mustard, Morrocan mustard High
Briza maxima big quakinggrass, rattlesnake grass Limited
Bromus diandrus ripgut brome, great brome Moderate
Bromus hordeaceus soft brome, soft chess Limited
Bromus japonicus Japanese brome, Japanese chess Limited
Bromus madritensis ssp. rubens red brome, foxtail chess High
Bromus tectorum cheatgrass, downy brome High
Cakile maritima European sea rocket Limited
Carduus acanthoides plumeless thistle, bristly thistle Limited
Carduus nutans musk thistle, giant plumeless thistle Moderate
Carduus pycnocephalus Italian thistle Moderate
Carduus tenuiflorus slenderflower thistle, Italian thistle Limited
Carpobrotus chilensis sea fig, iceplant Moderate
Carpobrotus edulis highway iceplant High
Carrichtera annua Ward's weed Moderate
Carthamus lanatus woolly distaff thistle, false starthistle Moderate
Centaurea calcitrapa purple starthistle Moderate
Centaurea diffusa diffuse knapweed Moderate
Centaurea jacea ssp. pratensis meadow knapweed Moderate
Centaurea melitensis tocalote, Malta starthistle Moderate
Centaurea solstitialis yellow starthistle High
Centaurea stoebe ssp. micranthos spotted knapweed High
Centaurea virgata var. squarrosa squarrose knapweed Moderate
Chondrilla juncea skeleton weed, devil's grass Moderate
Chrysanthemoides monilifera ssp. monilifera boneseed, Higgin's curse Moderate
Cirsium arvense Canada thistle Moderate
Cirsium vulgare bull thistle Moderate
Clematis vitalba old man's beard, traveler's joy Moderate
Colocasia esculenta taro root, wild taro Moderate
Conicosia pugioniformis narriow-leafed iceplant, false iceplant Limited
Conium maculatum poison-hemlock Moderate
Cordyline australis New Zealand cabbage tree, cabbage tree Limited
Cortaderia jubata jubatagrass, pampasgrass High
Cortaderia selloana pampasgrass, white pampasgrass High
Cotoneaster franchetii orange cotoneaster, cotoneaster Moderate
Cotoneaster lacteus milkflower cotoneaster, Parney's cotoneaster Moderate
Cotoneaster pannosus silverleaf cotoneaster, velvet cotoneaster Moderate
Cotula coronopifolia common brassbuttons Limited
Crataegus monogyna English hawthorn, common hawthorn Limited
Crocosmia x crocosmiiflora montbretia Limited
Crupina vulgaris common crupina Limited
Cynara cardunculus artichoke thistle, cardoon Moderate
Cynodon dactylon Bermuda grass, couch grass Moderate
Cynoglossum officinale common houndstongue, beggar's-lice Moderate
Cynosurus echinatus hedgehog dogtail, annual dogtail Moderate
Cytisus scoparius Scotch broom, English broom High
Cytisus striatus Portugese broom, hairy-fruited broom Moderate
Dactylis glomerata orchard grass Limited
Delairea odorata Cape-ivy, German ivy High
Descurainia sophia tansy mustard, flixweed Limited
Digitalis purpurea foxglove Limited
Dipsacus fullonum common teasel, wild teasel Moderate
Dipsacus sativus Fullers teasel Moderate
Dittrichia graveolens stinkwort, stinkweed Moderate
Echium candicans pride-of-Madeira Limited
Egeria densa Brazilian egeria, egeria High
Ehrharta calycina purple veldtgrass, African veldtgrass High
Ehrharta erecta panic veldtgrass, Ehrharta Moderate
Ehrharta longiflora long-flowered veldtgrass Moderate
Eichhornia crassipes water hyacinth High
Elaeagnus angustifolia Russian olive, oleaster Moderate
Elymus caput-medusae medusahead High
Emex spinosa devil's thorn, spiny threecornerjack Moderate
Erica lusitanica Spanish heath, Portuguese heath Limited
Erodium cicutarium redstem filaree, redstem stork's bill Limited
Eucalyptus camaldulensis red gum, river red gum Limited
Eucalyptus globulus blue gum, Tasmanian blue gum Limited
Euphorbia oblongata eggleaf spurge, oblong spurge Limited
Euphorbia terracina carnation spurge, Geraldton carnationweed Moderate
Euphorbia virgata leafy spurge, faitours-grass Moderate
Fallopia japonica Japanese knotweed, Mexican bamboo Moderate
Fallopia sachalinensis giant knotweed, sakhalin knotweed Moderate
Festuca arundinacea reed fescue, alta fescue Moderate
Festuca myuros rat-tail fescue, red-tailed fescue Moderate
Festuca perennis Italian ryegrass Moderate
Ficus carica edible fig Moderate
Foeniculum vulgare fennel, sweet fennel High
Gazania linearis gazania, treasure flower Moderate
Genista linifolia Flax-leaf broom, flax broom Moderate
Genista monosperma bridal veil broom Moderate
Genista monspessulana French broom, soft broom High
Geranium dissectum cutleaf geranium Limited
Geranium purpureum little robin Limited
Glebionis coronaria garland chrysanthemum, crown daisy Moderate
Glyceria declinata mannagrass, sweetgrass Moderate
Halogeton glomeratus Halogeton Moderate
Hedera canariensis Algerian ivy High
Hedera helix English ivy High
Helichrysum petiolare licorice plant Limited
Helminthotheca echioides bristly ox-tongue, bugloss Limited
Hirschfeldia incana short-pod mustard, Mediterranean mustard Moderate
Holcus lanatus common velvet grass, Yorkshire fog Moderate
Hordeum marinum Mediterranean barley, seaside barley Moderate
Hordeum murinum hare barley, foxtail Moderate
Hydrilla verticillata hydrilla, water thyme High
Hypericum canariense Canary Island St. Johnswort, Grenadillo Moderate
Hypericum perforatum St. John's wort, klamathweed Moderate
Hypochaeris glabra smooth cat's-ear Limited
Hypochaeris radicata rough cat's-ear, false dandelion Moderate
Ilex aquifolium English holly Moderate
Iris pseudacorus yellowflag iris, pale yellow iris Limited
Isatis tinctoria dyer's woad Moderate
Kochia scoparia kochia, belvedere Limited
Lepidium appelianum hairy whitetop Limited
Lepidium chalepense lens-podded hoary cress, lens-podded whitetop Moderate
Lepidium draba heart-podded hoary cress, whitetop Moderate
Lepidium latifolium perennial pepperweed, tall whitetop High
Leucanthemum vulgare ox-eye daisy, dog daisy Moderate
Ligustrum lucidum glossy privet, broad-leaved privet Limited
Limnobium laevigatum South American spongeplant, West Indian spongeplant High
Limonium duriusculum European sea lavendar Moderate
Limonium ramosissimum ssp. provinciale Algerian sea lavendar Limited
Linaria dalmatica ssp. dalmatica dalmatian toadflax, broad-leaved toadflax Moderate
Linaria vulgaris yellow toadflax, butter and eggs Moderate
Lobularia maritima sweet alyssum, sweet alison Limited
Ludwigia hexapetala creeping waterprimrose, Uruguay waterprimrose High
Ludwigia peploides floating water primrose, California waterprimrose High
Lythrum hyssopifolium hyssop loosestrife, grass poly Limited
Lythrum salicaria purple loosestrife High
Marrubium vulgare horehound, white horehound Limited
Medicago polymorpha California burclover, burr medic Limited
Mentha pulegium pennyroyal, European pennyroyal Moderate
Mesembryanthemum crystallinum crystalline iceplant, common iceplant Moderate
Mesembryanthemum nodiflorum slenderleaf iceplant, small flowered iceplant Limited
Myoporum laetum ngaio tree, false sandalwood Moderate
Myosotis latifolia common forget-me-not, wood forget-me-not Limited
Myriophyllum aquaticum parrotfeather, Brazilian watermilfoil High
Myriophyllum spicatum spike watermilfoil High
Nicotiana glauca tree tobacco Moderate
Olea europaea olive Limited
Ononis alopecuroides foxtail restharrow Limited
Onopordum acanthium Scotch thistle, cotton thistle High
Oxalis pes-caprae Bermuda buttercup, buttercup oxalis Moderate
Parentucellia viscosa yellow glandweed, sticky parentucellia Limited
Pennisetum clandestinum kikuyugrass Limited
Pennisetum setaceum crimson fountain grass, purple fountain grass Moderate
Phalaris aquatica harding grass, bulbous canarygrass Moderate
Phoenix canariensis Canary Island date palm Limited
Phytolacca americana common pokeweed, American cancer Limited
Plantago lanceolata English plantain, buckhorn plantain Limited
Poa pratensis Kentucky bluegrass, smooth meadowgrass Limited
Polypogon monspeliensis rabbitsfoot grass, annual beardgrass Limited
Potamogeton crispus curly-leaved pondweed, curled pondweed Moderate
Prunus cerasifera cherry plum, Myrobalan plum Limited
Pyracantha angustifolia narrowleaf firethorn, slender firethorn Limited
Pyracantha coccinea scarlet firethorn, firethorn Limited
Pyracantha crenulata Nepalese firethorn, Himalayan firethorn Limited
Ranunculus repens creeping buttercup Limited
Raphanus sativus wild radish Limited
Ricinus communis castor bean Limited
Robinia pseudoacacia black locust Limited
Rubus armeniacus Himalayan blackberry High
Rumex acetosella sheep sorrel Moderate
Rumex crispus curly dock Limited
Rytidosperma penicillatum hairy wallaby grass, hairy oat grass Limited
Saccharum ravennae ravennagrass, hardy pampas grass Moderate
Salsola paulsenii barbwire Russian thistle Limited
Salsola soda glasswort, oppositeleaf Russian thistle Moderate
Salsola tragus Russian thistle, common saltwort Limited
Salvia aethiopis Mediterranean sage, African sage Limited
Salvinia molesta giant salvinia, karibaweed High
Saponaria officinalis bouncing-bet, bouncing betty Limited
Schinus molle Peruvian pepper tree, California pepper tree Limited
Schinus terebinthifolius Brazilian pepper tree, Christmas-berry tree Limited
Schismus arabicus Mediterranean grass, Arabian schismus Limited
Schismus barbatus common Mediterranean grass, Old han schismus Limited
Senecio glomeratus cutleaf burnweed, cutleaf fireweed Moderate
Senecio jacobaea tansy ragwort, stinking willie Limited
Sesbania punicea scarlet wisteria, red sesbania High
Silybum marianum milk thistle, variegated thistle Limited
Sinapis arvensis wild mustard, canola Limited
Sisymbrium irio London rocket Moderate
Spartina alterniflora x foliosa smooth hybrid cordgrass High
Spartina anglica English cordgrass Moderate
Spartina densiflora dense-flowered cordgrass, Chilean cordgrass. High
Spartina patens Salt marsh hay Limited
Spartium junceum Spanish broom High
Stipa capensis Cape ricegrass Moderate
Stipa manicata Andean tussockgrass, tropical needlegrass Limited
Stipa miliacea var. miliacea smilo grass, bamboo grass Limited
Tamarix parviflora smallflower tamarisk High
Tamarix aphylla athel, athel pine Limited
Tamarix chinensis Chinese tamarisk, fivestamen tamarisk High
Tamarix gallica French tamarisk High
Tamarix ramosissima saltcedar, tamarisk High
Tanacetum vulgare common tansy, golden buttons Moderate
Tetragonia tetragonioides New Zealand spinach, warrigal greens Limited
Torilis arvensis hedgeparsley, spreading hedgeparsley Moderate
Triadica sebifera Chinese tallow tree, popcorn tree Moderate
Tribulus terrestris puncture vine, puncturevine Limited
Trifolium hirtum rose clover Limited
Ulex europaeus gorse, common gorse High
Undaria pinnatifida Japanese kelp, wakame Limited
Verbascum thapsus woolly mullein, common mullein Limited
Vinca major periwinkle, bigleaf periwinkle Moderate
Volutaria tubuliflora desert knapweed, Mediterranean knapweed Limited
Washingtonia robusta Mexican fan palm, Washington palm Moderate
Watsonia meriana bulbil watsonia, watsonia Limited
Zantedeschia aethiopica calla lily, arum lily Limited
Zostera japonica dwarf eelgrass, Japanese eelgrass Moderate
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