Turnera subulata Turnera ulmifolia
Turnera ulmifolia var. angustifolia Tussilago farfara
Tweedia caerulea Typha angustifolia
Typha japonica 'Variegata' Typha latifolia
Typha laxmanni Typha minima
Uebelmannia pectinifera Ulmus x 'Cathedral'
Ulmus x 'Dodoens' Ulmus x 'Frontier'
Ulmus x 'Homestead' Ulmus x 'Morton (Accolade™)'
Ulmus x 'Morton Glossy (Triumph™)' Ulmus x 'Pioneer'
Ulmus x 'Regal' Ulmus x 'Sapporo Autumn Gold'
Ulmus x 'Urban' Ulmus alata
Ulmus alata 'Lace Parasol' Ulmus americana
Ulmus americana 'Augustine' Ulmus americana 'Columnaris'
Ulmus americana 'Liberty' Ulmus americana 'Morden'
Ulmus americana 'Princeton' Ulmus americana 'Valley Forge'
Ulmus americana var. floridana Ulmus bergmanniana
Ulmus carpinifolia Ulmus carpinifolia 'Umbraculifera'
Ulmus carpinifolia x parvifolia Ulmus crassifolia
Ulmus davidiana Ulmus glabra
Ulmus glabra 'Camperdownii' Ulmus glabra 'Horizontalis'
Ulmus glabra 'Nana' Ulmus x hollandica
Ulmus x hollandica 'Bea Schwarz' Ulmus japonica
Ulmus laevis Ulmus parvifolia
Ulmus parvifolia 'Allee™' Ulmus parvifolia 'BSNUPF(Everclear®)'
Ulmus parvifolia 'Burgundy' Ulmus parvifolia 'Drake'
Ulmus parvifolia 'Dynasty' Ulmus parvifolia 'Emer I (Athena®)'
Ulmus parvifolia 'Emer II (Allee®)' Ulmus parvifolia 'Littleleaf'
Ulmus parvifolia 'Millikin' Ulmus parvifolia 'Pygmaea'
Ulmus parvifolia 'Sempervirens' Ulmus parvifolia 'UPMTF(Bosque®)'
Ulmus parvifolia 'Yatsubusa' Ulmus plotii
Ulmus procera Ulmus pumila
Ulmus serotina Ulmus villosa
Ulmus wilsoniana 'Prospector' Umbellularia californica
Uncarina grandidieri Ungnadia speciosa
Uniola paniculata Utricularia vulgaris
Uvularia grandiflora Uvularia sessilifolia
Vaccinium x 'Chippewa' Vaccinium x 'Duke'
Vaccinium x 'Pink Lemonade' Vaccinium angustifolium
Vaccinium arboreum Vaccinium corymbosum
Vaccinium corymbosum 'Herbert' Vaccinium corymbosum 'Sunshine Blue'
Vaccinium membranaceum Vaccinium ovatum
Vaccinium vitis-idaea Valeriana officinalis
Vancouveria hexandra Vanda spp.
Vauquelina californica Veitchia joannis
Veitchia macdanielsii Veitchia merrillii
Veitchia montgomeryana Veltheimia bracteata
Veltheimia bracteata 'Rosalba' Veltheimia capensis
Vepris undulata Veratrum nigrum