| University of South Carolina Herbarium | Free, fast plant identifications provided by the University of South Carolina Herbarium. Identifications can be made from herbarium specimens, fresh material, or jpg images. ("Ask Plantman!") |
| About Greenhouses.com | Answering all of your greenhouse questions; web resources indexed by subject, books, and expert advise available online |
| Aggie Horticulture | Information server of the Texas Horticulture Program, Texas A&M, combining information from the teaching, research and extension programs |
| All About Flowers (Source: Florist Directory) | Great information source about many common flowers |
| Avant-Gardening: Creative Organic Gardening | How-tos for sustainable organic gardening |
| Bonsai Boy of NY | Bonsai FAQs available |
| The Cactus and Succulent Plant Mall | Resource to all growers of cacti and succulent plants |
| Clean Air Gardening | Advice concerning lawns and gardens |
| Drosera | Urban ecology (featuring NYC); listings of invasive plants; promotion of native plants |
| emilycompost.com | An Internet plot with a garden of information |
| EveryRose | Rose reference database |
| Flower Framers | Good information in the FAQs about the use of window boxes |
| Flower Gardening Made Easy | A guide to creating a long-blooming flower garden: Information and tips on flower gardening, annuals, flower bulbs, perennials, ornamental grasses, shade gardening, and garden care and design. |
| The Gardener's Network | Useful information gardening site |
| Gardening in the Cabbage Patch | Collection of articles about gardening in in the sub-Arctic |
| Gardening Tips | Just what it says - gardening tips. |
| Grow'Em Plant Propagation Database | The Grow'Em database describes the propagation of over 1000 plant species from seeds, cuttings, layerings, etc. Composting techniques and fertilizers, growth media and lighting are presented in detail, as are foliar feeding, planting bare-root specimens, floating row covers, grafting techniques, etc. |
| Guide for Gardening | Find indoor and outdoor gardening tips, organic gardening, tools, plants and flower gardening guides, gardening help and garden pests. |
| Heirloom Tomatoes | Growing instructions |
| I Can Garden | Canadian gardening site with information and links |
| I Love Plants | Regional information for Central Pennsylvania |
| Learning2Bonsai | Everything bonsai. |
| Lewis Gardens | Great information about gardening in general and more specifically about perennials |
| Nature Hills Nursery Q & A | Question and Answer section of this nursery site gives excellent help for plant problems. |
| Northern Gardening | Articles and news about gardening in northern climates, especially Minnesota |
| Northscaping | Resource to gardeners and landscapers of the northern climates |
| The Orchid Conservatory | A virtual gallery or conservatory of orchids |
| Perry's Perennial Pages | Monthly updates on perennials |
| Plantcare.com | World's largest database on "How to Care For House Plants". Over 3,500 listings each displaying a page of care information with photos. |
| PlantOasis.com | A directory of houseplants and their care requirements, houseplant articles, and other resources |
| Pumpkin Nook | All you have ever wanted (or not) about pumpkins |
| Rochester Gardening | Gardening in Upstate New York |
| Rosarian | Guess what - this site is devoted to roses |
| The Succulent Plant Page | Resource for all those interested in succulents |
| Sue Haywards Gardening Website | Of interest to fellow gardeners, horticulture students and anyone else with a passion for gardening, plants and nature |
| Terra Nova Nurseries | Information on plants grown through tissue culturing |
| Tree Seed Germination | Germination guidelines and basic tips and techniques for germinating tree seeds |
| WebGarden | Student projects with important gardening topics and other great resources |
| Weekend Gardener | Practical horticulture for busy people |
| Wildflowers | Links to information about wildflowers on GardenWeb |
| thewisegardener.com | Information about tropical and subtropical gardening |