Scientific Namesort icon Common Name Type Subtype Extent Risk of Introduction First Source
Tamarix parviflora smallflower tamarisk plant woody widespread n/a (already in CA) Cal-IPC list
Tamarix ramosissima saltcedar plant woody widespread n/a (already in CA) Cal-IPC list
Tanacetum vulgare common tansy plant herbaceous limited n/a (already in CA) Cal-IPC list
Thymelaea passerina spurge flax plant herbaceous not present moderate WA Weed List
Torilis arvensis hedgeparsley plant herbaceous widespread n/a (already in CA) Cal-IPC list
Trapa bicornis water caltrap plant herbaceous not present low WA Weed List
Trapa natans water-chestnut plant herbaceous not present moderate AZ Weed List
Tribulus terrestris puncturevine plant herbaceous widespread n/a (already in CA) CDFA
Tridax procumbens coat buttons plant herbaceous not present low USDA Plant/Pest
Trifolium hirtum rose clover plant herbaceous widespread n/a (already in CA) Cal-IPC list
Tripleurospermum perforatum scentless false mayweed plant herbaceous not present low CO Weed List
Tussilago farfara coltsfoot plant herbaceous not present moderate OR Weed List
Ulex europaeus gorse plant woody limited n/a (already in CA) CDFA
Ulmus pumila Siberian elm plant woody limited n/a (already in CA) Med. plants list
Undaria pinnatifida wakame plant algae widespread n/a (already in CA) Cal-IPC list
Urochloa panicoides liverseed grass plant grass not present high USDA Plant/Pest
Utricularia inflata swollen bladderwort plant herbaceous not present moderate WA Weed List
Vallisneria spp. eelgrass plant herbaceous not present high CDFA
Verbascum blattaria moth mullein plant herbaceous limited n/a (already in CA) CO Weed List
Verbascum thapsus common mullein plant herbaceous widespread n/a (already in CA) Cal-IPC list
Verbena litoralis tall vervain plant herbaceous widespread n/a (already in CA) Cal-IPC list
Vicia sativa garden vetch plant herbaceous widespread n/a (already in CA) Weeds of CA
Vicia villosa hairy vetch plant herbaceous widespread n/a (already in CA) Weeds of CA
Vinca major big periwinkle plant herbaceous widespread n/a (already in CA) Cal-IPC list
Viscum album European mistletoe plant herbaceous limited n/a (already in CA) CDFA
Vulpia myuros rattail fescue plant grass widespread n/a (already in CA) Cal-IPC list
Washingtonia robusta Mexican fan palm plant woody limited n/a (already in CA) Cal-IPC list
Watsonia meriana bulbil watsonia plant herbaceous limited n/a (already in CA) Cal-IPC list
Zantedeschia aethiopica calla lily plant herbaceous limited n/a (already in CA) Cal-IPC list
Zostera japonica Japanese eelgrass plant herbaceous limited n/a (already in CA) CDFA
Zygophyllum fabago Syrian beancaper plant herbaceous limited n/a (already in CA) CDFA