|
| Rocky Mountain Wild Flowers | Prosild, A.E. | Wildflowers |
| Rocky Mountain Wildflowers (Colorado Mountain Club Pack Guide) | Ells, J. | Wildflowers |
| Rocky Mountain Wildflowers - Pocket Guide | Dahms, D. | Wildflowers |
| Rodale's Illustrated Encyclopedia of Perennials:10th Anniversary Revised and Expanded Edition | Phillips, E. Burrell, C. C. | Gardening |
| Root Book: How to Plant Wildflowers | Phillips, N. | Wildflowers
Gardening |
| Sagebrush Ocean: A Natural History of the Great Basin | Trimble, S. | Natural History |
| Salt Tide: Cycles and Currents of Life Along the Mid-Atlantic Coast | Badger, C. J. | Natural History |
| San Diego County Native Plants | Lightner, J. | Plant Identification |
| Science of Herbal Medicine: Pharmacological, Medical, Historical, Anthropological | Heinerman, J. | Useful Plants
Medicinal Plants |
| Scrub Plant Guide: A Pocket Guide to the Common Plants of Southern Florida's Scrub Community | Austin, Daniel; Penelope Honychurch; Steve Bass | Plant Identification |
| Seashore Plants of South Florida and the Caribbean | Nellis, David W. | Gardening
Landscaping
Natural History
Useful Plants |
| Secrets of Plant Propagation : Starting Your Own Flowers, Vegetables, Fruits, Berries, Shrubs, Trees, and Houseplants | Hill, L. | Plant Propagation |
| Secrets to Great Soil | Stell, Elizabeth | Gardening |
| Seed Propagation of Native California Plants | Emery, D.E. | Plant Propagation |
| Seeds: The Definitive Guide to Growing, History, and Lore | Loewer, H. P. | Plant Propagation |
| Seeds: The Ultimate Guide to Growing Successfully from Seed | McVicar, J. | Plant Propagation |
| Seeds: Time Capusles of Life | Kesseler, R.; Stuppy, W. | Plant Propagation |
| Selected California Native Plants With Commercial Sources | Saratoga Horticultural Foundation | Landscaping
Gardening |
| Sensitivae censitae : a description of the genus Mimosa Linnaeus (Mimosaceae) in the New World | Barneby, Rupert C. | Mimosa spp. |
| Shinners & Mahler's Illustrated Flora of North Central Texas | Diggs, G. M.; B. L. Lipscomb; B. O'Kennon; W. F. Mahler; L. H. Shinners | Plant Identification |
| Shrubs & Trees of the Southwest Deserts | Bowers, J. and Wignall, B. | Plant Identification |
| Shrubs and Trees of the Southwest Uplands | Elmore, F.H. | Plant Identification |
| Shrubs and Woody Vines of Florida (The): A Reference and Field Guide | Nelson, Gil | Plant Identification |
| Shrubs of the Great Basin: A Natural History | Mozingo, H.N. | Plant Identification |
| Sierra Nevada Flora | Weeden, N.F. | Plant Identification |
| Sierra Nevada Natural History | Storer, T. I. ; R. L. Usinger; D. Lukas | Natural History |
| Sierra Nevada Natural History: Revised Edition (California Natural History Guides) | Storer, T. I. | Wildlife |
| Sierra Nevada wildflowers | Horn, E. L. | Wildflowers |
| Sierra Nevada Wildflowers, 2nd: A Field Guide to Common Wildflowers and Shrubs of the Sierra Nevada, including Yosemite, Sequoia, and Kings Canyon National Parks (Wildflower Series) (2nd Edition) | Wiese, K. | Wildflowers |
| Sierra Nevada Wildflowers: a field guide to common wildflowers and shrubs of the Sierra Nevada, including Yosemite, Sequoia, and Kings Canyon National Parks | Wiese, K. | Wildflowers
Plant Identification |
| Silvics of North America (Agriculture Handbook 654) | Burns, Russell M. and Barbara H Honkala | Natural History |
| Smartgarden Regional Guide: Southeast (American Horticultural Society Smartgarden Regional Garden Guides) | Barrick, W. E. and Pelczar, R. | Gardening |
| Smithsonian Guide to Seaside Plants of the Gulf and Atlantic Coasts from Louisiana to Massachusetts, Exclusive of Lower Peninsular Florida | Duncan, W. H.; uncan, M. B. | Plant Identification |
| So You Want to Start a Nursery | Avent, T | Landscaping |
| Some Edible Mushrooms and How To Cook Them | Faubion, N. L. | Edible Plants |
| Some Natural Violet Hybrids of North America | Brainerd, Ezra | Wildflowers |
| Sonoran Desert wildflowers | Spellenberg, R. | Wildflowers |
| South Carolina Naturalists: An Anthology, 1700-1860 | Taylor, D. | Natural History |
| South Carolina Wildflowers | Midgley, J.W. | Wildflowers |
| South Texas wildflowers : collection one | Ham, H. | Wildflowers |
| Southeastern Wildflowers | Midgley, J. W. | Gardening
Plant Propagation
Wildflowers |
| Southern Appalachian Wildflowers | Medina, B. F.; V. Medina | Wildflowers |
| Southern California Native Plants for School Gardens | Landis, B. | Gardening
Landscaping |
| Southern Fruit & Vegetable Gardening: How to Plant, Grow, and Harvest the Best Edibles - Alabama, Arkansas, Georgia, Kentucky, Louisiana, Mississippi, ... (Fruit & Vegetable Gardening Guides) | Elzer-Peters, K. | Gardening |
| Southern Rocky Mountain Wildflowers: Including Rocky Mountain National Park (Wildflower Series) (1st Edition) | Robertson, L. | Plant Identification
Wildflowers |
| Southern Wildflowers | Parker, L. | Wildflowers |
| Southwestern Landscaping with Native Plants | Phillips, J. | Landscaping
Gardening |
| Spring flora of Central Oklahoma | Goodman, G. J. | Plant Identification |
| Spring Flora of Minnesota: Including Common Cultivated Plants | Morley, T. | Plant Identification |
| Spring Flora of Wisconsin : A Manual of Plants Growing without Cultivation and Flowering Before June 15 | Fassett, N. C.; O. S. Thomson | Plant Identification |
| Spring Wildflowers of New England | Dwelley, M. J. | Wildflowers |
| Spring Wildflowers of New Mexico | Martin, W. C. and C. R. Hutchins | Wildflowers |
| Spring Wildflowers of the Northeast: A Natural History | Gracie, C. | Wildflowers |
| Spring Wildflowers of West Virginia | Core, E. L. | Wildflowers |
| Stalking the Wild Asparagus | Gibbons, E. | Edible Plants |
| State of the Northwest | Ryan, J.C. | Rare and Endangered
Natural History |
| Steyermark's Flora of Missouri | Yatskievych, G. A. | Plant Identification |
| Stormscaping (Florida Gardening Series) | Crawford, P. | Landscaping |
| Street Trees for Metropolitan New York | Berrang, P. & D. F. Karnosky | Plant Identification |
| Strength of the Earth: The Classic Guide to Ojibwe Uses of Native Plants | Densmore, F. | Medicinal Plants
Useful Plants |
| Success with Wild Flowers & Plants | Slatcher, J. | Gardening
Landscaping
Plant Propagation |
| Summer & Fall Wildflowers of New England | Dwelley, D | Wildflowers |
| Summer Wildflowers of New Mexico | Martin, W. C. and C. R. Hutchins | Wildflowers |
| Sunflowers: Growing, Cooking and Crafting with the Sunniest of Plants | Sitton, D. M. | Edible Plants
Useful Plants
Wildflowers |
| Tallgrass Prairie Wildflowers 2: A Field Guide to Common Wildflowers and Plants of the Prairie Midwest | Ladd, D. | Plant Identification |
| Tallgrass prairie wildflowers : a field guide to the wildflowers, grasses, and woody vines of the tallgrass prairie | Ladd, D. M. ; F. Oberle | Plant Identification
Wildflowers |
| Tallgrass Prairie: The Inland Sea | Duncan, P. D. | Natural History |
| Tallgrass Restoration Handbook : For Prairies, Savannas, and Woodlands | Packard, S.; C. F. Mutel | Natural History
Plant Identification
Plant Propagation
Rare and Endangered |
| Taylor's Easy Plant Propagation | Ondra, N. J. | Plant Propagation |
| Taylor's Encyclopedia of Garden Plants : The Most Authoritative Guide to the Best Flowers, Trees, and Shrubs for North American Gardens | Tenenbaum, F. | Gardening
Landscaping
Plant Identification |
| Taylor's Guide to Annuals: How to Select and Grow More Than 400 Annuals, Biennials and Tender Perennials | Ellis, Barbara | Gardening |
| Taylor's Guide to Growing North America's Favorite Plants | Ellis, B. W. | Gardening
Landscaping |
| Taylor's Guide to Natural Gardening | Holmes, R. (ed.) | Gardening
Landscaping |
| Taylor's Guide to Perenials | Ellis, B | Gardening |
| Taylor's Guide to Shrubs: How to Select and Grow More than 500 Ornamental and Useful Shrubs for Privacy, Ground Covers, and Specimen Plantings | Fisher, K. | Gardening |
| Taylor's Guide to Trees: The Definitive, Easy-to-use Guide to 200 of the Garden's Most Important Plants | Roth, S. A. | Gardening |
| Taylor's Guides to Bulbs: How to Select and Grow More Than 400 Summer Hardy and Tender Bulbs | Ellis, B | Gardening |
| Taylor's Weekend Gardening Guide to Attracting Birds and Butterflies : How to Plant a Backyard Habitat to Attract Hummingbirds and Other Winged Wildlife | Ellis, B. W. | Gardening
Wildlife |
| Teaching the Trees: Lessons from the Forest | Maloof, J. | Natural History |
| Tending the Wild: Native American Knowledge and the Management of California's Natural Resources | Anderson, M. Kat | Useful Plants |
| Tennessee & Kentucky Garden Guide: The Best Plants for a Tennessee or Kentucky Garden (Garden Guides) | Lowe, J. | Gardening |
| Tennessee Trees & Wildflowers: An Introduction to Familiar Species (A Pocket Naturalist® Guide) | Kavanagh, J. M. | Wildlife |
| Terrestrial Flora of South Padre Island, Texas | Lonard, R.I. | Plant Identification |
| Terrestrial Vegetation of California | Major, J. ; M. G. Barbour | Plant Identification
Natural History |
| Texans love their land: A guide to 76 native Texas hill country woody plants | Wrede, J. | Plant Identification |
| Texas bug book: the good, the bad, and the ugly | Howard Garrett and C. Malcolm Beck | Wildlife |
| Texas Flower Garden: | Huber, K.; J. L. Peterson | Gardening
Landscaping
Plant Identification |
| Texas Gardening the Natural Way: The Complete Handbook | Garrett, Howard | Gardening |
| Texas Gardening: Answers from the Experts | Martin, L. C. | Gardening |
| Texas Mushrooms: A Field Guide (Corrie Herring Hooks Series) | Metzler, S. and V. Metzler | Plant Identification |
| Texas Organic Vegetable Gardening: The Total Guide to Growing Vegetables, Fruits, Herbs, and Other Edible Plants the Natural Way | Garrett, J. Howard | Gardening |
| Texas Range Plants | Hatch, S.L. | Plant Identification |
| Texas Trees & Wildflowers | Kavanagh, J. ; R. Leung | Plant Identification
Wildflowers |
| Texas Trees: A Friendly Guide | Cox, P. W. & P. Leslie | Plant Identification |
| Texas Wild Flowers | Johnston, A.S. | Wildflowers |
| Texas Wildflowers | Meier, L. & J. Reid | Wildflowers |
| Texas Wildflowers | Reynolds, Richard | Plant Identification |
| Texas Wildflowers: A Field Guide | Loughmiller, C. & L. Loughmiller | Rare and Endangered
Wildflowers |
| Texas Wildflowers: A Field Guide: New Edition
| Loughmiller, Campbell; L. Loughmiller; J. Marcus
| Wildflowers |
| Texas Wildflowers: A Field Guide: Revised Edition | C. Loughmiller, L. Loughmiller, D. Waitt | Wildflowers |
|
