# List of invasive plant species in California

A list of invasive plant species in California.
Numerous plants have been introduced to the California Floristic Province and within the state's borders. Many of them have become invasive species and/or noxious weeds. The following are some of these species:

## List

* Acacia dealbata—silver wattle
* Acacia melanoxylon—blackwood acacia
* Acacia paradoxa—paradox acacia
* Agrostis avenacea—Pacific bentgrass
* Ailanthus altissima—tree-of-heaven
* Aira caryophyllea
* Allium neapolitanum—white garlic
* Alliaria petiolata
* Alternanthera philoxeroides—alligatorweed
* Alternanthera sessilis—sessile joyweed
* Ammophila arenaria
* Ammophila breviligulata
* Ampelodesmos
* Andropogon virginicus
* Arctotheca calendula—capeweed
* Artemisia biennis
* Anthoxanthum odoratum—sweet vernal grass
* Arundo donax—giant reed
* Asparagus aethiopicus
* Asparagus asparagoides—bridal creeper
* Atriplex lindleyi
* Atriplex rosea
* Atriplex semibaccata—Australian saltbush
* Atriplex suberecta
* Avena barbata—slender oat
* Avena fatua—wild oats
* Avena sterilis—animated oat
* Azolla pinnata
* Brachypodium distachyon—annual false-brome
* Brachypodium sylvaticum—slender false-brome
* Brassica nigra—black mustard
* Brassica rapa-field mustard
* Brassica tournefortii
* Briza maxima—rattlesnake grass
* Bromus alopecuros
* Bromus arenarius
* Bromus catharticus
* Bromus commutatus
* Bromus diandrus—ripgut brome
* Bromus hordeaceus—soft chess
* Bromus madritensis ssp. rubens—red brome
* Bromus secalinus
* Bromus sterilis
* Bromus tectorum—cheatgrass
* Broom (plant)
* Cardaria draba—whitetop
* Carduus acanthoides
* Carduus crispus
* Carduus nutans—musk thistle
* Carduus pycnocephalus—Italian thistle
* Carduus tenuiflorus—winged plumeless thistle
* Carpobrotus chilensis—sea-fig
* Carpobrotus edulis—iceplant
* Castor oil plant
* Caulerpa taxifolia
* Centaurea calcitrapa—purple starthistle
* Centaurea diffusa—diffuse knapweed
* Centaurea iberica—Iberian knapweed
* Centaurea solstitialis—yellow starthistle
* Centaurea sulphurea—sulphur knapweed
* Centaurea virgata—squarrose knapweed
* Chenopodiastrum murale
* Chenopodium vulvaria
* Chloris gayana
* Cirsium arvense—Canada thistle
* Cirsium ochrocentrum—yellowspine thistle
* Cirsium vulgare—bull thistle
* Cistus monspeliensis
* Conium
* Cordyline australis—New Zealand cabbage tree
* Cortaderia jubata—pampasgrass
* Cortaderia selloana—white pampasgrass
* Cotoneaster franchetii—Cotoneaster
* Cotoneaster lacteus—Parney's Cotoneaster
* Cotoneaster pannosus—silverleaf cotoneaster
* Crataegus monogyna—common hawthorn
* Crocosmia x crocosmiiflora—montbretia
* Cynara cardunculus—cardoon thistle
* Cynanchum louiseae
* Cynodon dactylon—Bermuda grass
* Cyperus rotundus
* Cytisus multiflorus
* Cytisus scoparius—Scotch broom
* Cytisus striatus—Portuguese broom
* Dactylis glomerata—orchard grass
* Dactyloctenium aegyptium
* Delairea odorata—Cape ivy, German ivy
* Digitalis purpurea—foxglove
* Diplotaxis muralis
* Diplotaxis tenuifolia
* Dittrichia graveolens
* Echium candicans—pride-of-Madeira
* Eichhornia crassipes—water hyacinth
* Elaeagnus angustifolia—Russian olive
* Equisetum—horsetail
* Equisetum hyemale—scouringrush horsetail
* Eragrostis cilianensis—candy grass
* Erica lusitanica—Spanish heath
* Erodium botrys—broadleaf filaree
* Erodium cicutarium—redstem filaree
* Erysimum repandum
* Eucalyptus camaldulensis—red gum
* Eucalyptus globulus—blue gum
* Euphorbia peplus
* Fallopia baldschuanica
* Fennel
* Festuca arundinacea—coarse fescue
* Festuca myuros—red-tailed fescue
* Ficus carica—edible fig
* Foeniculum vulgare—fennel
* Gazania linearis—gazania
* Genista canariensis—Canary Islands broom
* Genista linifolia—Mediterranean broom
* Genista monosperma—bridal veil broom
* Genista monspessulana—French broom
* Geranium dissectum—cutleaf geranium
* Geranium molle—covesfoot cranesbill
* Glyceria declinata—mannagrass
* Hedera canariensis—Algerian ivy
* Hedera helix—English ivy
* Hedypnois cretica
* Helichrysum petiolare—licorice plant
* Hirschfeldia incana—Mediterranean mustard
* Heteranthera limosa
* Holcus lanatus—velvet grass, Yorkshire fog
* Hordeum marinum—Mediterranean barley
* Hordeum murinum—hare barley
* Hyparrhenia hirta
* Hypericum canariense—Canary Island St John's wort
* Hypericum grandifolium—large-leaved St John's wort
* Hypericum perforatum—St John's Wort
* Ilex aquifolium—English holly
* Ipomoea cairica—Coast Morning Glory
* Ipomoea indica—blue morning glory
* Iris missouriensis—western blue flag iris
* Iris pseudacorus—yellowflag iris
* Ivy
* Kali tragus
* Koenigia polystachya (syn. Polygonum polystachyum)
* Lantana montevidensis—purple lantana
* Leucanthemum vulgare—ox-eye daisy
* Ligustrum ovalifolium—California privet
* Limnobium laevigatum
* Limonium perezii—sea lavender
* Limonium ramosissimum ssp. provincale—Algerian sea lavender
* Lobularia maritima—sweet alyssum
* Lolium multiflorum—Italian ryegrass
* Ludwigia hexapetala—creeping waterprimrose
* Malva nicaeensis
* Marrubium vulgare—horehound
* Medicago polymorpha—burclover
* Melilotus indicus
* Mentha pulegium—pennyroyal
* Mesembryanthemum crystallinum—common iceplant
* Myoporum laetum—myoporum
* Myosotis latifolia—common forget-me-not
* Myriophyllum aquaticum—parrotfeather
* Myriophyllum spicatum—spike watermilfoil
* Nassella manicata—Andean tussockgrass
* Nicotiana glauca—tree tobacco
* Nymphaeaceae—water lilies
* Oenothera glazioviana—redsepal evening primrose
* Olea europaea—olive
* Onopordum acanthium—Scotch thistle
* Oncosiphon pilulifer-sinkweed
* Oxalis pes-caprae—Bermuda buttercup
* Parietaria judaica—spreading pellitory
* Paspalum dilatatum—dallisgrass
* Pennisetum clandestinum—kikuyugrass
* Pennisetum setaceum—fountain grass
* Phalaris aquatica—harding grass
* Phoenix canariensis—Canary Island date palm
* Piptatherum miliaceum—smilo grass
* Pistacia atlantica
* Plantago lanceolata—English plantain
* Poa pratensis—Kentucky bluegrass
* Polygonum arenastrum
* Polypogon australis—beardgrass
* Prunus cerasifera—cherry plum
* Prunus lusitanica—Portuguese laurel
* Psathyrostachys juncea
* Puccinellia distans
* Pyracantha angustifolia—narrowleaf firethorn
* Pyracantha coccinea—European firethorn
* Pyracantha crenulata—firethorn
* Ranunculus repens—creeping buttercup
* Raphanus sativus—wild radish
* Retama monosperma—bridal veil broom
* Reynoutria japonica (syn. Polygonum cuspidatum)—Japanese knotweed
* Ricinus communis—castor bean
* Robinia pseudoacacia—black locust
* Rubus armeniacus—Himalayan blackberry
* Rubus laciniatus—barbwire Russian thistle
* Rumex crispus—curly dock
* Saccharum ravennae—ravennagrass
* Salsola paulsenii—barbwire Russian thistle
* Salsola soda—oppositeleaf Russian thistle
* Salsola tragus—Russian thistle
* Salvia aethiopis—African sage
* Schinus molle—Peruvian/California pepper tree
* Schinus terebinthifolius—Brazilian pepper tree
* Setaria verticillata
* Silybum marianum—milk thistle
* Sinapis arvensis—canola
* Solanum elaeagnifolium
* Solanum lanceolatum
* Spartina alterniflora—smooth cordgrass
* Spartina densiflora—Chilean cordgrass
* Spartina patens—Salt marsh hay
* Spartium—broom
* Spartium junceum—Spanish broom
* Stipa capensis—cape ricegrass
* Tamarix aphylla—athol
* Tamarix chinensis—Chinese tamarisk
* Tamarix gallica—French tamarisk
* Tamarix parviflora—smallflower tamarisk
* Tamarix ramosissima—salt cedar, tamarisk
* Tanacetum vulgare—common tansy
* Tetragonia tetragonioides—New Zealand spinach
* Torilis arvensis—spreading hedgeparsley
* Trifolium angustifolium
* Trifolium dubium
* Trifolium hirtum—rose clover
* Trisetum flavescens
* Ulex—gorse
* Ulex europaeus—common gorse
* Undaria pinnatifida—wakame
* Verbascum thapsus—wooly mullein
* Vinca
* Vinca major—periwinkle
* Vinca minor—dwarf periwinkle
* Viola labradorica
* Vulpia myuros
* Wakame
* Washingtonia robusta—Mexican fan palm
* Watsonia meriana—watsonia
* Zantedeschia aethiopica—calla lily
* Zostera japonica—Japanese eelgrass