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 See also List of California native plants Invasive species in the United States Natural history of California External links California Cal-IPC: California Invasive Plant Inventory Database List USDA PLANTS Database: California State Noxious Weeds List Cal-IPC: California Invasive Plant Council homepage + information. Cal-IPC: CalWeedMapper California Native Plant Society—CNPS: Invasive Weeds + links. UC IPM" Invasive Plants of California — managing invasive plants. PlantRight.org: address and stop sale of invasive garden plants in California National Invasive Species Information Center: California Invasive Species Lists Invasive Environment of California Invasive plant species Natural history of California California