- The American Horticultural Society is a world resource for the most comprehensive information on gardening and arboreta.
- Arboricultural Stuff is a brief guide to proper tree pruning.
- Butterfly Zone - The Zone is your Butterfly Gardening center, with an excellent butterfly guidebook, educational materials, and even a gift boutique!
- The Calgary Horticultural Society - Up to date gardening information from one of the largest, oldest and most active horticultural societies in Canada.
- The Clyde Robin Seed Company - Wildflowers Mixes, regional and speciality
- Daylilies Online contains JPEG photos
- The Dirt Gardener's Gardening Journal - California Gardening Resourse: question and answers, weekend 'To Do' List and tidbits
- East Valley Garden Club
- Gardening Directory - Provides categorically sorted gardening links to interesting gardening sites. Includes topics such as organic gardening, horticultural resources, botanical gardens and pest and weed control.
- Gardening & Horticulture ACS - Free information & links; correspondence courses, book & video reviews
- Gardening in the Cabbage Patch in Fairbanks, Alaska
- Gardening services - Garden design and construction, nursery of ornamental plants, landscape projects, software about ornamental plants, and more horticultural services...
- Gardens + Gardening
- The Garden Gate on Prairienet
- GardenMart - garden products, retailers, growers, services, experts, events, plants and a free gardening gift to our guest.
- Howard Garrett's Basic Organic Program - Tips and information on organic gardening from a recognized expert in the field.
- HydroSource Soil Polymers - Developers of the HydroSource/DeWitt Sunbelt No-Water/NoWeed Vegetable Growing System
- ICanGarden - Gardening resource for Canadian amateur and professional gardeners
- National Gardening Association is a Vermont-based national nonprofit leader in garden-based education. NGA supports KidsGardening.org, a provider of grants and free materials for educators and families so that they may use gardening as a resource for learning. Our mission is to empower every generation to lead healthier lives, build stronger communities, and encourage environmental stewardship through educational garden programs.
- New Info on Hydroponic Gardening on Video and CD-Rom - New info is now available on hydroponic gardening on video and CD-Rom
- Organic Tree, Lawn and Garden - Organic Tree, Lawn and Garden Consultant.
- Penn State University - Horticulture Variety Trial Garden contains flower and vegetable variety testing results
- Stokes Tropicals - Online Catalog for Bananas, Bromeliads, Gingers, Heliconias, Plumerias. Amature Botanist collect Tropical Plants to preserve the Environment
- The Strawberry Facts contains links to anything accessible via WWW which is pertinent to the subject of Strawberries.
- The Tree Doctor is a place to find everything you need to know about tree care. Environmentally friendly tree care products.
- Time Life Complete Gardener Encyclopedia
- University of Michigan - Orchid Picture Gallery contains images and descriptions of some orchids that may be grown on windowsills or under fluorescent lights.
- Virtual Garden is Time Warner's source for horticulture.