| Rating | Book | Author |
 (3) | La Connaissance des Sauges | Christian Froissart |
| (2) | Lakescaping For Wildlife and Water Quality | Carrol L. Henderson |
| Landscape as Spirit: Creating a Contemplative Garden | Martin Hakubai Mosko |
| Landscape Construction 1-2-3 (Expert Advice from the Home Depot) | John Holmes |
| (1) | Landscape Gardening (Time-Life Encyclopedia of Gardening series) | James Underwood Crockett |
| Landscape Graphics: Plan, Section and Perspective Drawing of Landscape Spaces | Grant W. Reid, FASLA |
| Landscape Plants for Dry Regions: More Than 600 Species from Around the World | Warren D. Jones |
| Landscape Plants for Eastern North America: Exclusive of Florida and the Immediate Gulf Coast, (2nd Edition) | Harrison L. Flint |
| Landscape Plants For South Florida | Dr. George K. Rogers |
| (2) | Landscape Plants For South Florida, 2nd Ed. | Dr. George K. Rogers |
| (1) | Landscape Plants for the Gulf and South Atlantic Coasts: Selection, Establishment, and Maintenance | Robert J. Black |
| Landscape With Roses: Gardens, Walkways, Arbors, Containers | Jeff Cox |
| Landscapes for Small Spaces: Japanese Courtyard Gardens | Katsuhiko Mizuno |
| Landscaping (Southern Living Garden Guide Series) | William Slack |
| Landscaping Earth Ponds | Tim Matson |
| Landscaping for Dummies | Philip Giroux |
| (2) | Landscaping For Wildlife | Carrol L. Henderson |
| Landscaping With Fruits and Vegetables | Fred Hagy |
| Landscaping with Herbs | James Adams |
| Landscaping with Herbs: Beautify Your Yard and Garden with Easy-Care Herbs (Rodale's Essential Herbal Handbooks) | Nancy J. Ondra |
| Landscaping with Native Plants of Michigan | Lynn M. Steiner |
| Landscaping with Native Plants of Minnesota | Lynn M. Steiner |
| Landscaping with Native Plants of Southern California | George Oxford Miller |
| Landscaping with Native Plants of Texas | George Oxford Miller |
| Landscaping with Native Plants of the Southwest | George Oxford Miller |
| (1) | Landscaping with Native Plants of Wisconsin | Lynn M. Steiner |
| (1) | Landscaping with Native Trees - The Northeast, Midwest, Midsouth & Southeast Edition | Guy Sternberg |
| (2) | Landscaping with Nature, Using Nature's Designs to Plan Your Yard | Jeff Cox |
| Landscaping With Ornamental Grasses | Fiona Gilsenan |
| (2) | Landscaping with Perennials | Emily L. Brown |
| Landscaping with Stone | Pat Sagui |
| Landscaping with Tropical Plants | Editors of Sunset Books & Magazines |
| Larding the Lean Earth | Steven Stoll |
| Larer Rhododendron Species | Peter A. Cox |
| (1) | Large-Leaved Perennials | Myles Challis |
| (1) | Lasagna Gardening for Small Spaces | Patricia Lanza |
| (5) | Lasagna Gardening: A New Layering System for Bountiful Gardens: No Digging, No Tilling, No Weeding, No Kidding! | Patricia Lanza |
| Late Summer Flowers | Marina Christopher |
| Lavender Lies (China Bayles Mystery) | Susan Wittig Albert |
| Lavender: Fragrance of Provence | Hans Silvester |
| Lavender: How to Grow and Use the Fragrant Herb | Ellen Spector Platt |
| Lavender: Practical Inspirations for Natural Gifts, Country Crafts and Decorative Displays | Tessa Evelegh |
| (2) | Lavender: The Grower's Guide | Virginia McNaughton |
| Lawn Care for Dummies | Lance Walheim |
| Lawnflowers, A Story and A List of Names | Dennis Bauer |
| Lawns | Organic Gardening Magazine |
| Lawns & Ground Covers (Southern Living Garden Guide Series) | Barbara Pleasant |
| Lawns 1-2-3 | Home Depot |
| Lawns and Ground Covers: How to Select, Grow and Enjoy | Michael MacCaskey |
| Lawns and Groundcovers (Time-Life Encyclopedia of Gardening series) | James Underwood Crockett |
| Lawns: Quick and Easy Grasses and Groundcovers | Carol A. Crotta |
| Learn to Garden: A Complete Introduction to Gardening | |
| Learn to Garden: A Practical Introduction to Gardening | Fiona Wild |
| Learning about Leaves (sticker book) | Dorothy Barlowe |
| Lemons: Growing, Cooking, Crafting | Kate Chynoweth |
| Leonardo da Vinci on Plants and Gardens (History and Ethno- and Economic Botany Series, Vol 1) | William A. Emboden |
| Les Tillandsia | Albert Roquenant |
| (2) | Let It Rot! The Gardener's Guide to Composting (3rd Edition) | Stu Campbell |
| (1) | Let's Get Growing: A Dirt-Under-The-Nails Primer on Raising Vegetables, Fruits, and Flowers Organically | Crow Miller |
| (2) | Let's Grow Tomatoes | Jacob R. Mittleider |
| Let's Grow! Seventy-Two Gardening Adventures with Children | Linda Tilgner |
| (1) | Lewisias | Roy Davidson |
| Lexicon of Succulent Plants | Hermann Jacobsen |
| Lichens of North America | Irwin M. Brodo |
| Lichens of the North Woods (North Woods Naturalist Series) | Joe Walewski |
| Liebmann's Mexican Ferns (Contributions from the New York Botanical Garden, Vol 19) | Frederick Liebmann |
| (2) | Lilacs for the Garden | Jennifer Bennett |
| Lilacs: A Gardener's Encyclopedia | John L. Fiala |
| Lilacs: The Genus Syringa | John L. Fiala |
| Lilies | Scott D. Appell |
| (1) | Lilies | Pamela McGeorge |
| Lilies for English Gardens | Gertrude Jekyll |
| Lilies That Fester (Bretta Solomon Gardening Mysteries) | Janis Harrison |
| (1) | Lilies: A Guide for Growers and Collectors | Edward A. McRae |
| Linnaeus' Philosophia Botanica | Carl Linnaeus |
| Linnea's Windowsill Garden | Cristina Bjork |
| Liquid Gold: The Lore and Logic of Using Urine to Grow Plants | Carol Steinfeld |
| Little Herb Gardens: Simple Secrets for Glorious Gardens--Indoors and Out | Georgeanne Brennan |
| Living with Chickens: Everything You Need to Know to Raise Your Own Backyard Flock | Jay Rossier |
| Living with Flowers | Nico De Swert |
| Living with Flowers (Rev. edition) | J. Barry Ferguson |
| Living with Japanese Gardens | Lisa Parramore |
| Living with Plants | George Carter |
| Living with Wildlife: How to Enjoy, Cope with, and Protect North America's Wild Creatures Around Your Home and Theirs | California Center for Wildlife |
| Livingston and the Tomato | A.W. Livingston |
| Llewellyn's Herbal Almanac | Ed Day |
| Logee's Greenhouses Spectacular Container Plants: How to Grow Dramatic Flowers for Your Patio, Sunroom, Windowsill, and Outdoor Spaces | Laurelynn G. Martin |
| Lois Hole's Bedding Plant Favorites | Lois Hole |
| Lois Hole's Favorite Bulbs: Better Choices, Better Gardens | Lois Hole |
| Lois Hole's Favorite Trees & Shrubs | Lois Hole |
| Lois Hole's Northern Flower Gardening: Bedding Plants - A Guide for Cooler Climates | Lois Hole |
| Lois Hole's Northern Vegetable Gardening: A Guide for Cooler Climates | Lois Hole |
| (3) | Lois Hole's Perennial Favorites | Lois Hole |
| (1) | Lois Hole's Tomato Favorites: Share Lois's Tomato Facts & Folklore | Lois Hole |
 (1) | Lois Hole's Vegetable Favorites | Lois Hole |
| Lone Star Field Guide to Wildflowers, Trees, and Shrubs of Texas (Lone Star Field Guides) | Delena Tull |
| (1) | Lost Crops of Africa, Volume 1: Grains | National Research Council |
| (1) | Lost Crops of the Incas: Little-Known Plants of the Andes with Promise for Worldwide Cultivation | National Research Council |
| (1) | Louisiana Gardener's Guide | Dan Gill |
| (2) | Louisiana Iris: The Taming of a Native American Wildflower | Marie Caillet |
| Love Lies Bleeding (China Bayles Mystery) | Susan Wittig Albert |
| Low Maintenance Garden | Jenny Hendy |
| Low Maintenance Gardening (Southern Living Garden Guide Series) | |
| Low Water Use Plants: For California And The Southwest | Carol Shuler |
| Low-Maintenance Gardening | Jackie Matthews |
| Low-Maintenance Gardening: Beautiful Gardens in Half-An-Hour a Week | Peter McHoy |
| Low-Maintenance Gardens (Step-By-Step Series) | Patricia Taylor |
| Low-Maintenance Water Gardens | Helen Nash |
| Lush Low-Water Plants & Landscapes: Beautiful Gardens with Less Water | Scott Millard |
