|
| Trees of Missouri Field Guide (Field Guides) | Tekiela, Stan | Plant Identification |
| Trees of New England : A Natural History | Fergus, C. | Natural History
Plant Identification |
| Trees of New York State: Native and Naturalized | Leopold, D. J. | Plant Identification |
| Trees of Northern Florida | Kurz, H. | Plant Identification |
| Trees of Ontario | Kershaw, Linda | Plant Identification |
| Trees of The American Southwest | Petrides, P. A. | Plant Identification |
| Trees of the Central Hardwood Forests of North America: An Identification and Cultivation Guide | Leopold, D. J.; W. C. McComb; R. N. Muller | Natural History
Plant Identification |
| Trees of the Eastern and Central United States and Canada | Harlow, W.M. | Plant Identification |
| Trees of the Great Basin: A Natural History | Lanner, R.M. | Natural History
Plant Identification |
| Trees of the Northern United States and Canada | Farrar, J. L. | Plant Identification |
| Trees of the Southeastern United States | Duncan, W. H. & M. B. Duncan | Plant Identification |
| Trees Shrubs and vines of Arkansas (Third Edition) | Hunter, C. G. | Plant Identification |
| Trees to Know in Oregon | Jensen, E. | Plant Identification |
| Trees, Shrubs, & Cacti of South Texas | Everitt, J.H. & D. L. Drawe | Plant Identification |
| Trees, Shrubs, & Woody Vines (of) Kansas | Stephens, H. A. | Plant Identification |
| Trees, shrubs, and flowers of the Midwest | Hultman, G.E. | Plant Identification |
| Trees, Shrubs, and Vines for Attracting Birds: A Manual for the Northeast | DeGraaf, R. M. ; G. M. Witman | Gardening
Landscaping
Wildlife |
| Trees, Shrubs, and Vines of the Texas Hill Country | Wrede, J. | Plant Identification |
| Trees, Shrubs, and Woody Vines of East Texas | Nixon, E.S. | Plant Identification |
| Trees, Shrubs, and Woody Vines of Great Smoky Mountains National Park | Stupka, A. | Plant Identification |
| Trees, Shrubs, and Woody Vines of Louisiana | C. M. Allen; D. A. Newman; H. H. Winters | Plant Identification |
| Trees, Shrubs, and Woody Vines of Northern Florida and Adjacent Georgia and Alabama | Godfrey, R.K. | Plant Identification |
| Trees, Shrubs, and Woody Vines of the Southwest | Vines, R. A. | Plant Identification |
| Trees: National Champions | Bosworth, B.; D. R. Nickel; J. R. Stilgoe | Natural History
Plant Identification |
| Trillium: Guide to the Common Wildflowers of North Eastern Wisconsin | Good, M. B. | Wildflowers |
| Truth About Garden Remedies : What Works, What Doesn't & Why | Gillman. J. | Gardening |
| Tyler's Herbs of Choice: The Therapeutic Use of Phytomedicinals | Robbers, J. E.; V. E. Tyler | Medicinal Plants
Useful Plants |
| Ultralight Wildflower Guide to the Central Montana Rocky Mountains: Wildflower Montana | Kukolax, A. | Plant Identification
Wildflowers |
| Uncommon Beauty: Wildflowers and Flowering Shrubs of Southern Alberta and Southeastern BC | Jennings, N. L. | Wildflowers |
| Untamed Vermont: Extraordinary Wilderness Areas of the Green Mountain State | Gardner, A. B. | Wildlife |
| Upland Field and Forest Wildflowers | Underhill, J. E.; D. Ottosen | Wildflowers |
| Urban and Suburban Meadows: Bringing Meadowscaping to Big and Small Spaces | Catherine Zimmerman | Landscaping
Sustainable Landscaping
Wildflowers |
| Useful wild plants of Texas, the Southeastern and Southwestern United States, the Southern Plains, and Northern Mexico (Volume 1: Abronia-Arundo) | S. Cheatham; M. C. Johnston; L. Marshall | Useful Plants |
| Useful Wild Plants of Texas, the Southeastern and Southwestern United States, the Southern Plains, and Northern Mexico (Volume 2: Asclepias-Canavalia) | Cheatham, S. ; M. C. Johnston; L. Marshall | Useful Plants |
| Uses of Ecology: Lake Washington and Beyond | Edmondson, W.T. | Natural History |
| Uses of Plants by the Indians of the Missouri River Region (Enlarged Edition) | Gilmore, G. R. | Useful Plants |
| Using Plants For Healing: An American Herbal | Coon, N. | Medicinal Plants |
| Using Plants for Healing: Featuring a guide to over 250 medicinal plants | Coon, N. | Medicinal Plants |
| Using Wild and Wayside Plants | Coon, N. | Useful Plants
Edible Plants |
| Utah Wildflowers: A Field Guide To Northern And Central Mountains And Valleys (First Edition) | Shaw, R. J. | Wildflowers |
| Vanishing Heritage: Wildflowers of Cape Cod | DiGregorio, M. & J. Wallner | Rare and Endangered
Wildflowers |
| Vascular Flora of Georgia: An Annotated Checklist | Duncan, W. H. & Kartesz, J.T. | Plant Identification |
| Vascular Flora of the Southeastern United States: Vol. 1: Asteraceae | Cronquist, A. | Plant Identification |
| Vascular Flora of the Southeastern United States: Vol. 1: Asteraceae | Cronquist, A. | Plant Identification |
| Vascular Plant Taxonomy | Walters and Keil | Plant Identification |
| Vascular plants of Iowa : an annotated checklist and natural history | Eilers, L. J. & D. M. Roosa | Plant Identification |
| Vascular Plants of Kentucky: An Annotated Checklist | Browne, E.T. & R. Athey | Plant Identification |
| Vascular Plants of Minnesota: A Checklist & Atlas | Ownbey, G. B. & T. Morley | Plant Identification |
| Vascular Plants of Montana [Paperback] [First Edition] | Dorn, R. D. and Dorn, J. L. (Illustrator) | Plant Identification |
| Vascular Plants of Northern Utah: An Identification Manual | Shaw, R.J. | Plant Identification |
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