Tricyrtis x 'Empress' Tricyrtis x 'Hatatogisa'
Tricyrtis x 'Kohaku' Tricyrtis x 'Lightning Strike'
Tricyrtis x 'Shining Light' Tricyrtis x 'Taipei Silk'
Tricyrtis x 'Tojen' Tricyrtis affinis 'Tricolor'
Tricyrtis formosana 'Amethystina' Tricyrtis formosana 'Gates of Heaven'
Tricyrtis formosana 'Samurai' Tricyrtis hirta
Tricyrtis hirta 'Golden Gleam' Tricyrtis hirta 'Miyazaki'
Tricyrtis hirta 'Variegata' Tricyrtis macrantha ssp. macranthopsis
Trifolium repens Trifolium repens 'Atropurpureum'
Trifolium repens 'Wheatfen' Triglochin maritima
Trillium chloropetalum 'Rubrum' Trillium cuneatum
Trillium erectum Trillium grandiflorum
Trillium lancifolium Trillium luteum
Trillium nivale Trillium pusillum
Trillium stamineum Trillium sulcatum
Trillium viride Triphasia trifolia
Tripsacum dactyloides Tripsacum floridana
Tristania conferta Tristaniopsis laurina
Tristaniopsis laurina 'Variegata' Trithrinax acanthocoma
Trithrinax brasiliensis Trithrinax campestris
Trochodendron aralioides Trollius chinensis
Trollius x cultorum 'Golden Queen' Trollius x cultorum 'Miss Mary Russel'
Trollius europaeus Tropaeolum majus
Tropaeolum majus 'Alaska' Tropaeolum majus 'Jewel Lavender'
Tropaeolum majus 'Mahogany Jewel' Tropaeolum majus 'Variegata'
Tropaeolum majus 'Whirlybird' Tropaeolum majus 'Whirlybird Cream'
Tropaeolum peregrinum Tropaeolum polyphyllum
Tropaeolum tricolorum Tsuga canadensis
Tsuga canadensis 'Bennett' Tsuga canadensis 'Coles Prostrate'
Tsuga canadensis 'Frosty' Tsuga canadensis 'Jeddeloh'
Tsuga canadensis 'Lewisii' Tsuga canadensis 'Macrophylla'
Tsuga canadensis 'Pendula' Tsuga canadensis 'Sargentii'
Tsuga caroliniana Tsuga dumosa
Tsuga heterophylla Tsuga mertensiana
Tulbaghia violacea Tulbaghia violacea 'Silver Lace'
Tulbaghia violacea 'Variegata' Tulipa x
Tulipa x 'Ballade' Tulipa x 'Bonanza'
Tulipa x 'Calgary' Tulipa x 'Dillenburg'
Tulipa x 'Early Harvest' Tulipa x 'Elegant Lady'
Tulipa x 'Fringed Elegance' Tulipa x 'Johann Strauss'
Tulipa x 'Mariette' Tulipa x 'Maytime'
Tulipa x 'New Design' Tulipa x 'Oscar'
Tulipa x 'Queen of Night' Tulipa x 'Spring Green'
Tulipa x 'Texas Fire' Tulipa 'Angelique'
Tulipa 'Blue Parrot' Tulipa 'Fire Queen'
Tulipa 'Flair' Tulipa 'Gavota'
Tulipa 'La Belle Epoque' Tulipa 'Rembrandt Mix'
Tulipa 'Scarlet Baby' Tulipa 'White Bouquet'
Tulipa acuminata Tulipa bakeri 'Lilac Wonder'
Tulipa batalinii 'Bright Gem' Tulipa batalinii 'Little Gem'
Tulipa batalinii 'Red Jewel' Tulipa clusiana
Tulipa clusiana var. chrysantha Tulipa fosteriana 'Zombie'
Tulipa greigii 'Red Reflexion' Tulipa hageri 'Little Beauty'
Tulipa kaufmanniana Tulipa kurdica
Tulipa linifolia Tulipa pulchella 'Eastern Star'
Tulipa pulchella 'Violacea' Tulipa tarda
Tulipa turkestanica Tulipa urumiensis
Tulipa whittallii