Appendix L7. INVASIVE PLANT LIST


Latest version.
  • The California Invasive Plant Inventory includes plants that are deemed a potential threat to the state's wildlands. The list (as amended over time), was prepared by the California Invasive Plant Council, and represents the best available information from invasive plant experts in the State of California. Inclusion on the list is based on an assessment of the ecological impacts of each plant, and ratings represent cumulative impacts statewide rather than by individual region.

    Table 1
    Invasive Plant List

    Scientific Name Common Name
    Acacia dealbata Silver wattle
    Acacia melanoxylon Black acacia, blackwood acacia
    Acroptilon repens Russian knapweed
    Aegilops triuncialis Barb goatgrass
    Ageratina adenophora Croftonweed, eupatorium
    Agrostis avenacea Pacific bentgrass
    Agrostis stolonifera Creeping bentgrass
    Ailanthus altissima Tree-of-heaven
    Alhagi maurorum Camelthorn
    Alternanthera philoxeroides Alligator weed
    Ammophila arenaria European beachgrass
    Anthoxanthum odoratum Sweet vernalgrass
    Arctotheca calendula (fertile) Fertile capeweed
    Arctotheca calendula (sterile) Sterile capeweed
    (synonym of Arctotheca prostrata)
    Arundo donax Giant reed
    Asparagus asparagoides Bridal creeper
    Asphodelus fistulosus Onionweed
    Atriplex semibaccata Australian saltbush
    Avena barbata Slender wild oat
    Avena fatua Wild oat
    Bassia hyssopifolia Fivehook bassia
    Bellardia trixago Bellardia
    Brachypodium distachyon Annual false-brome, false brome, purple false broom, stiff brome
    Brachypodium sylvaticum Perennial false-brome
    Brassica nigra Black mustard
    Brassica rapa Birdsrape mustard, field mustard
    Brassica tournefortii Saharan mustard, African mustard
    Briza maxima Big quackingrass, rattlesnakegrass
    Bromus diandrus Ripgut brome
    Bromus hordeaceus Soft brome
    Bromus japonicus Japanese brome, Japanese chess
    Bromus madritensis ssp. rubens Red brome
    Bromus tectorum Downy brome, cheatgrass
    Cakile maritima European sea-rocket
    Cardaria chalepensis Lens-podded white-top
    Cardaria draba Hoary cress
    Cardaria pubescens Hairy whitetop
    Carduus acanthoides Plumeless thistle
    Carduus nutans Musk thistle
    Carduus pycnocephalus Italian thistle
    Carduus tenuiflorus Slenderflower thistle
    Carpobrotus chilensis Sea-fig, iceplant
    Carpobrotus edulis Hottentot-fig, iceplant
    Carthamus lanatus Woolly distaff thistle
    Centaurea calcitrapa Purple starthistle
    Centaurea debeauxii Meadow knapweed
    Centaurea diffusa Diffuse knapweed
    Centaurea maculosa Spotted knapweed
    Centaurea melitensis Malta starthistle, tocalote
    Centaurea solstitialis Yellow starthistle
    Centaurea virgata ssp. squarrosa Squarrose knapweed
    Chondrilla juncea Rush skeletonweed
    Chrysanthemum coronarium Crown daisy
    Cirsium arvense Canada thistle
    Cirsium vulgare Bull thistle
    Conicosia pugioniformis Narrowleaf iceplant
    Conium maculatum Poison-hemlock
    Cordyline australis Giant dracaena, New Zealand cabbage tree
    Cortaderia jubata Jubatagrass
    Cortaderia selloana Pampasgrass
    Cotoneaster franchetii Orange cotoneaster
    Cotoneaster lacteus Parney's cotoneaster
    Cotoneaster pannosus Silverleaf cotoneaster
    Cotula coronopifolia Brassbuttons
    Crataegus monogyna Hawthorn
    Crocosmia x crocosmiiflora Montbretia
    Crupina vulgaris Common crupina, bearded creeper
    Cynara cardunculus Artichoke thistle
    Cynodon dactylon Bermudagrass
    Cynoglossum officinale Houndstongue
    Cynosurus echinatus Hedgehog dogtailgrass
    Cytisus scoparius Scotch broom
    Cytisus striatus Portuguese broom
    Dactylis glomerata Orchardgrass
    Delairea odorata Cape-ivy, German-ivy
    Descurainia sophia Flixweed, tansy mustard
    Digitalis purpurea Foxglove
    Dipsacus fullonum Common teasel
    Dipsacus sativus Fuller's teasel
    Dittrichia graveolens Stinkwort
    Echium candicans Pride-of-Madeira
    Egeria densa Brazilian egeria
    Ehrharta calycina Purple veldtgrass
    Ehrharta erecta Erect veldtgrass
    Ehrharta longiflora Long-flowered veldtgrass
    Eichhornia crassipes Water hyacinth
    Elaeagnus angustifolia Russian-olive
    Emex spinosa Spiny emex, devil's-thorn
    Erechtites glomerata, E. minima Australian fireweed, Australian burnweed
    Erica lusitanica Spanish heath
    Erodium cicutarium Redstem filaree
    Eucalyptus camaldulensis Red gum
    Eucalyptus globulus Tasmanian blue gum
    Euphorbia esula Leafy spurge
    Euphorbia oblongata Oblong spurge
    Euphorbia terracina Carnation spurge
    Festuca arundinacea Tall fescue
    Ficus carica Edible fig
    Foeniculum vulgare Fennel
    Gazania linearis Gazania
    Genista monspessulana French broom
    Geranium dissectum Cutleaf geranium
    Glyceria declinata Waxy mannagrass
    Halogeton glomeratus Halogeton
    Hedera helix, H. canariensis English ivy, Algerian ivy
    Helichrysum petiolare Licoriceplant
    Hirschfeldia incana Shortpod mustard, summer mustard
    Holcus lanatus Common velvet grass
    Hordeum marinum, H. murinum Mediterranean barley, hare barley, wall barley
    Hydrilla verticillata Hydrilla
    Hypericum canariense Canary Island hypericum
    Hypericum perforatum Common St. John's wort, klamathweed
    Hypochaeris glabra Smooth catsear
    Hypochaeris radicata Rough catsear, hairy dandelion
    Ilex aquifolium English holly
    Iris pseudacorus Yellowflag iris
    Isatis tinctoria Dyer's woad
    Kochia scoparia Kochia
    Lepidium latifolium Perennial pepperweed, tall whitetop
    Leucanthemum vulgare Ox-eye daisy
    Limnobium laevigatum South American spongeplant
    Limonium ramosissimum ssp. provinciale Algerian sea lavendar
    Linaria genistifolia ssp. dalmatica Dalmation toadflax
    Linaria vulgaris Yellow toadflax, butter and eggs
    Lobularia maritima Sweet alyssum
    Lolium multiflorum Italian ryegrass
    Ludwigia hexapetala Uruguay water-primrose
    Ludwigia peploides ssp. montevidensis Creeping water-primrose
    Lythrum hyssopifolium Hyssop loosestrife
    Lythrum salicaria Purple loosestrife
    Marrubium vulgare White horehound
    Medicago polymorpha California burclover
    Mentha pulegium Pennyroyal
    Mesembryanthemum crystallinum Crystalline iceplant
    Myoporum laetum Myoporum
    Myosotis latifolia Common forget-me-not
    Myriophyllum aquaticum Parrotfeather
    Myriophyllum spicatum Eurasian watermilfoil
    Nicotiana glauca Tree tobacco
    Olea europaea Olive
    Ononis alopecuroides Foxtail restharrow
    Onopordum acanthium Scotch thistle
    Oxalis pes-caprae Bermuda buttercup, buttercup oxalis, yellow oxalis
    Parentucellia viscosa Yellow glandweed, sticky parentucellia
    Pennisetum clandestinum Kikuyugrass
    Pennisetum setaceum Crimson fountaingrass
    Phalaris aquatica Hardinggrass
    Phoenix canariensis Canary Island date palm
    Phytolacca americana Common pokeweed
    Picris echioides Bristly oxtongue
    Piptatherum miliaceum Smilograss
    Plantago lanceolata Buckhorn plantain, English plantain
    Poa pratensis Kentucky bluegrass
    Polygonum cuspidatum Japanese knotweed
    Polygonum sachalinense Sakhalin knotweed
    Polypogon monspeliensis and subspp. Rabbitfoot polypogon, annual beardgrass
    Potamogeton crispus Curlyleaf pondweed
    Prunus cerasifera Cherry plum
    Pyracantha angustifolia, P. crenulata, P. coccinea Pyracantha, firethorn
    Ranunculus repens Creeping buttercup
    Raphanus sativus Radish
    Retama monosperma Bridal broom
    Ricinus communis Castorbean
    Robinia pseudoacacia Black locust
    Rubus armeniacus Himalaya blackberry
    Rumex acetosella Red sorrel, sheep sorrel
    Rumex crispus Curly dock
    Rytidosperma pencillatum Hairy oat grass
    Saccharum ravennae Ravennagrass
    Salsola paulsenii Barbwire Russian-thistle
    Salsola soda Oppositeleaf Russian thistle
    Salsola tragus Russian-thistle
    Salvia aethiopis Mediterranean sage
    Salvinia molesta Giant salvinia
    Sapium sebiferum Chinese tallowtree
    Saponaria officinalis Bouncingbet
    Schinus molle Peruvian peppertree
    Schinus terebinthifolius Brazilian peppertree
    Schismus arabicus, Schismus barbatus Mediterraneangrass
    Senecio jacobaea Tansy ragwort
    Sesbania punicea Red sesbania, scarlet wisteria
    Silybum marianum Blessed milkthistle
    Sinapis arvensis Wild mustard, charlock
    Sisymbrium irio London rocket
    Spartina alterniflora
    (and S. alterniflora x foliosa hybrids)
    Smooth cordgrass and hybrids, Atlantic cordgrass
    Spartina anglica Common cordgrass
    Spartina densiflora Dense-flowered cordgrass
    Spartina patens Saltmeadow cord grass
    Spartium junceum Spanish broom
    Stipa capensis Mediterranean steppegrass, twisted-awned speargrass
    Stipa manicata Tropical needlegrass
    Taeniatherum caput-medusae Medusahead
    Tamarix aphylla Athel tamarisk
    Tamarix parviflora Smallflower tamarisk
    Tamarix ramosissima Saltcedar, tamarisk
    Tanacetum vulgare Common tansy
    Tetragonia tetragonioides New Zealand spinach
    Torilis arvensis Hedgeparsley
    Trifolium hirtum Rose clover
    Ulex europaeus Gorse
    Undaria pinnatifida Wakame
    Verbascum thapsus Common mullein, woolly mullein
    Vinca major Big periwinkle
    Vulpia myuros Rattail fescue
    Washingtonia robusta Mexican fan palm
    Watsonia meriana Bulbil watsonia
    Zantedeschia aethiopica Calla lily
    Zostera japonica Dwarf eelgrass

     

(Ord. No. 4492, § 9, 6-21-2016)