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Scientific Name Common Name(s) Plant Category Image
Thermopsis caroliniana Southern lupine Perennials
Thermopsis villosa Bush pea, False lupine, Thermopsis Perennials, Wildflowers
Thuja occidentalis American arborvitae, Eastern arborvitae Trees
Thuja occidentalis 'Hetz's Midget' Hetz's Midget eastern arborvitae Shrubs
Thuja occidentalis 'Holmstrup' Holmstrup arborvitae Shrubs
Thuja occidentalis 'Little Gem' Little Gem arborvitae Shrubs
Thuja occidentalis 'Rheingold' Rheingold arborvitae Shrubs
Thuja occidentalis 'Sunkist' Sunkist arborvitae Shrubs
Thuja plicata Giant arborvitae, Western red cedar Trees
Thymus herba-barona Caraway thyme Groundcover
Thymus leucotrichus Juniper thyme Groundcover
Thymus praecox Creeping thyme, Mother of thyme Groundcover
Thymus serpyllum Creeping Thyme, Mother of thyme Groundcover
Thymus vulgaris Common thyme, Garden thyme Edible Plants, Groundcover, Herbs
Tiarella cordifolia False miterwort, Foamflower Groundcover, Herbs, Native Plants, Perennials, Wildflowers
Tigridia Mexican shell flowers, Tiger flowers Summer Bulbs
Tilia americana American basswood, American linden Edible Plants, Trees
Tilia americana var. heterophylla Beetree linden, White basswood Edible Plants, Native Plants, Trees
Tilia cordata Littleleaf linden, Small leaf lime tree Edible Plants, Trees
Tilia mongolica Mongolian linden Trees
Tilia platyphyllos Bigleaf linden Trees
Tilia tomentosa Silver linden Edible Plants, Trees
Tilia x euchlora Crimean linden Trees
Tipularia discolor Cranefly orchid Native Plants, Wildflowers
Tithonia rotundifolia Mexican sunflower Annuals
Tolmiea menziesii Piggyback plant, pickaback plant Poisonous Plants
Torenia fournieri Wishbone flower Annuals
Torreya spp. Stinking cedar, Torreya Poisonous Plants
Toxicodendron pubescens Poison oak Poisonous Plants
Toxicodendron radicans Poison ivy Native Plants, Poisonous Plants, Shrubs, Vines
Toxicodendron vernix Poison sumac Poisonous Plants
Trachelospermum asiaticum Asiatic jasmine, Yellow star jasmine Groundcover, Vines
Trachelospermum jasminoides Confederate jasmine, Star jasmine Annuals, Groundcover, Perennials, Poisonous Plants, Vines
Trachycarpus fortunei Windmill palm Trees
Tradescantia spp. Hairy stem spiderwort, Spiderwort, Tradescantia Poisonous Plants, Wildflowers
Tradescantia subaspera Spiderwort Perennials, Poisonous Plants, Wildflowers
Tradescantia virginiana Virginia spiderwort Native Plants, Wildflowers
Tradescantia x andersonii Spiderwort Perennials, Poisonous Plants
Tradescantia zebrina Inch plant, Wandering Jew Perennials
Tragopogon porrifolius Oyster-plant Wildflowers
Tragopogon pratensis Yellow goat's-beard Wildflowers
Trichostema dichotomum Blue curls Wildflowers
Tridens flavus Grease grass, Purpletop tridens Native Plants, Ornamental Grass, Perennials
Trifolium arvense Rabbits-foot clover Wildflowers
Trifolium repens Clover Edible Plants, Groundcover, Perennials
Trillium catesbaei Catesby's trillium Poisonous Plants, Wildflowers
Trillium cernuum Nodding trillium Poisonous Plants, Wildflowers
Trillium cuneatum Hugher's trillium, Little sweet Betsy Poisonous Plants, Wildflowers
Trillium discolor Colorless trillium Poisonous Plants, Wildflowers
Trillium erectum Red trillium, Wake Robin trillium Poisonous Plants, Wildflowers