Dave's Garden

Maintain plants and seeds inventory, discuss gardening, and trade seeds and plants with fellow gardeners. Many features are only available to paying members, some also to the general public.
http://davesgarden.com/

I Can Garden

Canadian gardening resource site by editor and Master Gardener, Donna Dawson. Includes a member's area, news, articles, book reviews, clubs, suppliers, pictures and links.
http://www.icangarden.com/

SeeMeGarden

Community of gardening enthusiasts sharing tips, advice, experiences, and knowledge covering many aspects of gardening.
http://www.seemegarden.com/

The Helpful Gardener: Garden Forum

A discussion forum for the home gardener. Members provide helpful answers for home gardening questions in a number of topics.
http://www.helpfulgardener.com/phpBB2/

GardenWeb

Community of gardeners offering a wide range of resources. Forums on a large variety of general and specialized topics, glossary of botanical terms, seed exchange, and plant directory.
http://www.gardenweb.com/

Garden Country

Message board for communing with other gardeners. Includes a butterfly garden guide, weed identifier, and e-cards.
http://www.gardencountry.com/

Digital Raingardens: Gardening Questions and Answers

Forum for general discussion of gardening questions.
http://www.raingardens.com/forum/index.cgi

Garden Stew

Discussion forums on several gardening topics, as well as a few home improvement topics.
http://www.gardenstew.com/

You Grow Girl

Offers a young fresh twist on gardening information, tips and articles. Discussion forums and archives available.
http://www.yougrowgirl.com/

GardenWeb Australia

Hosts forums, garden exchanges, articles, contests and a plant database.
http://www.au.gardenweb.com/

UKY Listserv: Gardens & Gardening

Worldwide community chats via an e-mail mailing list on a wide variety of topics including gardening. Archives online available to members of the list.
http://lsv.uky.edu/archives/gardens.html

GardenBanter

A web front to several usenet newsgroups, covering general, regional, and water gardening topics. Threads are displayed forum-style. Posting requires registering with the site.
http://www.gardenbanter.co.uk/

GardenBuddies.com

Forums and photo galleries covering many gardening topics, visited by an international audience. Archives of plant information.
http://gardenbuddies.com

Gay Gardener

Offers planting tips, gardening history, forums, quotes, and a monthly newsletter.
http://www.gaygardener.com

Just Gardeners

Includes forums, articles, catalog reviews, and a plant and seed swap area.
http://justgardeners.com/

MSN Groups: Northern Gardening

Friendly meeting place for home gardeners, mostly from the Northern half of the US. Photo galleries, message board, and lots of links to gardening resources.
http://groups.msn.com/NorthernGardening/

Pittsburgh Post Gazette Bulletin Boards: Backyard Gardener

Discussions on various gardening topics.
http://bbs.post-gazette.com/boards/viewboard.asp?boardid=2

Suite101.com: Gardening Community

Directory of gardening topics available at this resource site. Each topic is written by a different regular editor.
http://www.suite101.com/gardencenter/

International Home & Garden Club

Online gardening club that offers members-only forums, gardening resources, and monthly newsletter. Paid membership.
http://www.ihgc.net/

Blossom Swap

Lively community of gardening enthusiasts, forums, plant and seed swaps, articles, gardening tips, and photographs.
http://www.blossomswap.com/

Garden Bed

Reviews on a range of flowers, plants, trees, and shrubs. Section for kids.
http://gardenbed.com/

Homestead Garden

Online community focused on gardening with a simplified-living bent. Forums, a few articles, links to extension services, and printable journals and logs.
http://www.homesteadgarden.com/

Hort.net: Archived Active Horticultural Mailing Lists

Maintains archives of about 30 gardening-related mailing lists, with a link to archives of additional now defunct lists.
http://www.hort.net/lists/

Plantideas.com

Garden resource site with articles, tips and links about many indoor and outdoor gardening topics, forums, and exchanges.
http://www.plantideas.com/

Tinker's Gardens

This site focuses on daylilies, providing articles on their cultivation and hybridization, as well as an extensive database. Also provides discussions of some other flowers and vegetables. Most of the action is in the many forums.
http://www.tinkersgardens.com/

Happy Moose Gardening Forum

Offers specialty forums on daylilies, hostas, and irises.
http://daylily.net/phpbb2/index.php

Northscaping

Information resources, e-zine, forums, and links of interest to Northern gardeners and landscapers (USDA hardiness zones 1-5). Includes a landscape plant search, articles, climatic data, and business locators.
http://www.northscaping.com/

PlantTraders

Online community of friends and gardeners, sharing experiences, plants, and seeds.
http://planttraders.ipbhost.com/

MSN Groups: Great Impressions

The treehouse forum at this group features friendly discussion of various gardening topics. Also includes links to worthwhile gardening resources, and members' photo albums. Must join group (free) to read and participate.
http://groups.msn.com/greatimpressions/