| Rating | Book | Author |
| National Audubon Society Field Guide to Mushrooms | National Audubon Society |
 (2) | National Audubon Society Field Guide to North American Butterflies | Robert Michael Pyle |
 (2) | National Audubon Society Field Guide to North American Insects & Spiders | Lorus Milne |
| (3) | National Audubon Society Field Guide to North American Wildflowers: Eastern Region | John W. Thieret |
| (3) | National Audubon Society Field Guide To North American Wildflowers: Western Region | |
| (1) | National Audubon Society Field Guide to Trees: Eastern Region | |
| National Audubon Society Field Guide to Trees: Western Region | |
| National Audubon Society First Field Guide: Trees | Brian Cassie |
| National Audubon Society First Field Guide: Wildflowers | Susan Hood |
| (1) | National Audubon Society Pocket Guide to Familiar Trees: East | Jerry Franklin |
| (1) | National Audubon Society: The Bird Garden: A Comprehensive Guide to Attracting Birds to Your Backyard Throughout the Year | Stephen W. Kress |
| National Gardening Association Book of Eggplant, Okra and Peppers | |
| National Gardening Association Guide to Kids' Gardening: A Complete Guide for Teachers, Parents and Youth Leaders | Lynn Ocone |
| National Geographic Field Guide to the Birds of North America (3rd edition) | National Geographic Society |
| National Wildlife Federation Field Guide to Trees of North America | Bruce Kershner |
| (1) | Native Alternatives to Invasive Plants | C. Colston Burrell |
| (1) | Native Ferns, Moss, and Grasses: From Emerald Carpet to Amber Wave, Serene and Sensuous Plants for the Garden | William Cullina |
| Native Flora Volume I: Trees and Shrubs of Uruguay, Argentina, Brazil and Paraguay | Fernando |
| (1) | Native Florida Plants | Robert G. Haehle |
| (1) | Native Harvests: Recipes and Botanicals of the American Indian | Barrie Kavasch |
| (1) | Native Landscaping from El Paso to L.A. | Sally Wasowski |
| Native Plants for High-Elevation Western Gardens | Janice Busco |
| (2) | Native Plants for Southwestern Landscapes | Judy Mielke |
| Native Plants in the Coastal Garden: A Guide for Gardeners in the Pacific Northwest | April Pettinger |
| (2) | Native Plants of the Northeast: A Guide for Gardening & Conservation | Donald J. Leopold |
| Native Shrubs and Woody Vines of the Southeast: Landscaping Uses and Identification | Leonard E. Foote |
| Native Texas Gardens: Maximum Beauty Minimum Upkeep | Sally Wasowski |
| (1) | Native Texas Plants: Landscaping Region By Region | Sally Wasowski |
| Native Treasures: Gardening With the Plants of California | Nevin Smith |
| Native Trees and Shrubs of the Florida Keys | J. Paul Scurlock |
| (4) | Native Trees for North American Landscapes | Guy Sternberg |
| Native Trees of Canada | R.C. Hosie |
| Native Trees of the Bahamas | Jack Patterson |
| Native Trees of the Southeast | L. Katherine Kirkman |
| (3) | Native Trees, Shrubs, and Vines: A Guide to Using, Growing, and Propagating North American Woody Plants | William Cullina |
| Natural Gardening A-Z | Donald W. Trotter, Ph.D. |
| Natural Gardening in Small Spaces | Noel Kingsbury |
| (1) | Natural Landscaping: Designing with Native Plant Communities | John Diekelmann |
| (1) | Natural Landscaping: Gardening With Nature to Create a Backyard Paradise | Sally Roth |
| Naturalistic Gardening: Reflecting the Planting Patterns of Nature | Ann Lovejoy |
| (4) | Neil Sperry's Complete Guide to Texas Gardening | Neil Sperry |
 (1) | Nevada Gardener's Guide | Linn Mills |
| (1) | New Complete Guide to Gardening | Susan A. Roth |
| New Complete Guide to Landscaping: Design, Plant, Build (Better Homes and Gardens) | |
| New Complete Home Landscaping | Catriona Tudor Erler |
| (6) | New Encyclopedia of Herbs & Their Uses | Deni Brown |
| New England Gardener's Guide | Jacqueline Heriteau |
| (1) | New Gardener | Pippa Greenwood |
| (1) | New Gardens in Provence: 30 Contemporary Creations | Louisa Jones |
| New Herb Bible: Growing and Knowing Your Herbs - And How to Use Them | Caroline Foley |
| (4) | New Illustrated Guide to Gardening | Reader's Digest Editors |
| New Jersey Gardener's Guide The What, Where, When, How & Why Of Gardening In New Jersey | Pegi Ballister-Howells |
| New Mexico Gardener's Guide | Judith Phillips |
| (4) | New Organic Grower: A Master's Manual of Tools and Techniques for the Home and Market Gardener | Eliot Coleman |
| New York Gardener's Guide (revised edition) | Ralph Snodsmith |
| New York/Mid-Atlantic Gardener's Book of Lists | Bonnie Lee Appleton |
| (2) | Newcomb's Wildflower Guide | Lawrence Newcomb |
| Newspaper, Pennies, Cardboard, and Eggs--For Growing a Better Garden | Roger Yepsen |
| Nightshade (China Bayles Mystery) | Susan Wittig Albert |
| Niwaki: Pruning, Training and Shaping Japanese Garden Trees | Jake Hobson |
| No Garden? No Problem!: Design and Planting Ideas for the Smallest of Spaces: Steps, Walls, Roof Terraces, Balconies, Basements and Courtyards | Mike Pilcher |
| No Green Thumb Required! Organic Family Gardening Made Easy | Don Rosenberg |
| No One Gardens Alone: A Life of Elizabeth Lawrence | Emily Herring Wilson |
| No Time to Garden | Anne Swithinbank |
| (1) | No-Dig, No-Weed Gardening | Raymond P. Poincelot |
| (5) | Noah's Garden: Restoring the Ecology of Our Own Backyards | Sara B. Stein |
| Noble Trees of the South Carolina Upcountry | John Lane |
| Norah Lindsay: The Life and Art of a Garden Designer | Allyson Hayward |
| North American Wildlife: Trees and Nonflowering Plants | Reader's Digest Editors |
| North American Wildlife: Wildflowers | Reader's Digest Editors |
| North Carolina Gardener's Guide | Toby Bost |
| North Carolina Trees & Wildflowers | James Kavanagh |
| Northeast Home Landscaping, Including Southeast Canada (rev. edition) | Roger Holmes |
| Northern Balcony Gardening | Brian Andrews |
| (1) | Northern California Gardening: A Month-By-Month Guide | Katherine Grace Endicott |
| Northwest Garden Style: Ideas, Designs, and Methods for the Creative Gardener | Jan Kowalczewski Whitner |
| (1) | Northwest Home Landscaping, Including Western British Columbia (rev. edition) | Roger Holmes |
| Northwest Landscaping | Michael Munro |
