American Rhododendron Society (ARS)
Non-profit organization offering comprehensive information about the genus Rhododendron. Find links to ARS’s chapters located around the world.

Back Yard Gardener
Gardening information source and store.

Better Homes & Gardens
Offers articles, a plant database and garden plans.

Dave’s Garden
Comprehensive gardening resource and community.

Evergreen
Canadian non-profit environmental organization dedicated to creating and sustaining healthy, dynamic outdoor spaces - in our schools, our communities and our homes. Online resources include a Native Plant Database and other useful materials.

Fine Gardening
Articles, Video Tips, Garden Plans & Projects, Guide to Pronouncing Botanical Latin

Go For Green - Gardening for Life
A Canadian program that supports the idea of natural gardening and avoiding the use of chemical pesticides, herbicides and fertilizers.

i Can Garden
ICanGarden.com began in 1995 by Master Gardener, Donna Dawson, with a view to providing information to gardeners. Since its origin, ICanGarden has grown to include information on over 400 garden clubs, almost 300 public gardens, over 3500 articles from over 150 garden writers. Excellent Canadian resources.

Martha Stewart Gardening
Has articles, encyclopedia of plants, gardening blog, garden gallery.