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 the Cal-IPC ratings can be found here.

Download: You can download the Inventory. You may download the entire inventory as a XLS or CSV, or the rating scores only as XLS or CSV.

Watchlist: The Watchlist is a companion to the Inventory, listing plants not yet rated as invasive but starting to raise concerns. Download XLS.

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 information here

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 carpet bent, creeping 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-horn smotherweed, five-hook bassia Limited
Bellardia trixago bellardia, mediterranean lineseed Limited
Brachypodium distachyon annual false-brome, false brome Moderate
Brachypodium sylvaticum false-brome, slender false-brome Moderate
Brassica nigra black mustard Moderate
Brassica rapa turnip, field mustard 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
Carthamus lanatus woolly distaff thistle, false starthistle Moderate
Centaurea calcitrapa purple starthistle Moderate
Centaurea debeauxii
Centaurea jacea nothossp. pratensis
meadow knapweed Moderate
Centaurea diffusa diffuse knapweed Moderate
Centaurea melitensis Malta starthistle, tocalote 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
Cirsium arvense Canada thistle Moderate
Cirsium vulgare bull thistle Moderate
Conicosia pugioniformis narriow-leafed iceplant, false iceplant Limited
Conium maculatum poison-hemlock Moderate
Cordyline australis Ti Kouka, New Zealand cabbage tree Limited
Cortaderia jubata jubatagrass, pampasgrass High
Cortaderia selloana pampasgrass, white pampasgrass High
Cotoneaster franchetii Cotoneaster Moderate
Cotoneaster lacteus Parney's Cotoneaster, milkflower 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 beggar's-lice, common houndstongue Moderate
Cynosurus echinatus annual dogtail, bristly dogtail grass 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 flixweed, tansy mustard 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 spiny threecornerjack, devil's thorn Moderate
Erica lusitanica Spanish heath, Portuguese heath Limited
Erodium cicutarium filaree, redstem filaree 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 Geraldton carnationweed, carnation spurge Moderate
Euphorbia virgata leafy spurge, faitours-grass Moderate
Fallopia japonica Japanese knotweed, Mexican bamboo Moderate
Fallopia sachalinensis giant knotweed, sakhalin knotweed Moderate
Festuca arundinacea alta fescue, coarse 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 monosperma bridal veil broom Moderate
Genista monspessulana French broom, soft broom High
Geranium dissectum cutleaf geraniium Limited
Glebionis coronaria garland chrysanthemum, crown daisy Moderate
Glyceria declinata mannagrass, sweetgrass Moderate
Halogeton glomeratus Halogeton Moderate
Hedera helix, H. canariensis English ivy and Algerian ivy High
Helichrysum petiolare licorice plant Limited
Helminthotheca echioides bristly ox-tongue, bugloss Limited
Hirschfeldia incana Mediterranean mustard, short-pod mustard Moderate
Holcus lanatus common velvet grass, Yorkshire fog Moderate
Hordeum marinum, H. murinum Mediterranean barley, hare barley 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 catsear Limited
Hypochaeris radicata common cat's-ear, rough cat'€™s-ear 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 whitetop, hoary cress Moderate
Lepidium draba (heart podded) hoary cress, white-top Moderate
Lepidium latifolium perennial pepperweed, tall whitetop High
Leucanthemum vulgare ox-eye daisy, dog daisy Moderate
Limnobium laevigatum South American spongeplant, West Indian spongeplant High
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 creeping waterprimrose, California waterprimrose High
Lythrum hyssopifolium hyssop loosestrife, grass poly Limited
Lythrum salicaria purple loosestrife High
Marrubium vulgare horehound, white horehound Limited
Medicago polymorpha burr medic, California burclover Limited
Mentha pulegium pennyroyal, European pennyroyal Moderate
Mesembryanthemum crystallinum crystalline iceplant, common iceplant Moderate
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 buttercup oxalis, Bermuda buttercup 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 buckhorn plantain, English plantain Limited
Poa pratensis Kentucky bluegrass, smooth meadowgrass Limited
Polypogon monspeliensis rabbitfoot polypogon, annual beardgrass Limited
Potamogeton crispus curly-leaved pondweed, curled pondweed Moderate
Prunus cerasifera cherry plum, Myrobalan plum Limited
Pyracantha angustifolia, crenulata, coccinea narrowleaf firethorn, scarlet 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 oppositeleaf Russian thistle, glasswort 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, S. barbatus Mediterraneangrass, split-grass Limited
Senecio glomeratus cutleaf fireweed, cutleaf burnweed 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, S. alterniflora smooth cordgrass and hybrids 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 tropical needlegrass, Andean tussockgrass Limited
Stipa miliacea var. miliacea smilo grass, bamboo grass Limited
Tamarix parviflora smallflower tamarisk High
Tamarix aphylla athel, athel pine Limited
Tamarix ramosissima, T. gallica, T. chinensis 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 trees, chicken tree Moderate
Trifolium hirtum rose clover Limited
Ulex europaeus gorse, common gorse High
Undaria pinnatifida Japanese kelp, wakame Limited
Verbascum thapsus common mullein, wooly mullein Limited
Vinca major periwinkle, bigleaf periwinkle Moderate
Washingtonia robusta Washington palm, Mexican fan palm Moderate
Watsonia meriana Watsonia, bulbil watsonia Limited
Zantedeschia aethiopica calla lily, arum lily Limited
Zostera japonica dwarf eelgrass, Japanese eelgrass Moderate
zz_Draft_Carrichtera annua Wards weed Moderate
zz_Draft_Chrysanthemoides monilifera ssp. monilifera boneseed, Higgin's curse Moderate
zz_Draft_Clematis vitalba old man's beard, traveler's joy Moderate
zz_Draft_Colocasia esculenta taro root, wild taro Moderate
zz_Draft_Geranium purpureum little robin Limited
zz_Draft_Ligustrum lucidum glossy privet, broad-leaved privet Limited
zz_Draft_Limonium duriusculum European sea lavendar Moderate
zz_Draft_Mesembryanthemum nodiflorum slenderleaf iceplant, small flowered iceplant Limited
zz_Draft_Tribulus terrestris puncturevine, Puncture vine Limited
zz_Draft_Volutaria tubuliflora desert knapweed, Mediterranean knapweed Limited
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