Gardening Resources - A collection of resources to help you make the most of your garden, to find the gardening equipment and know-how you want to develop your green thumb.
Sunset: Heavens Above - Profiles of gardens in San Francisco and Seattle with a focus on containers.
The Rooftop Garden Project - "Promotes rooftop gardening in Montreal and around the world, through information and a demonstration garden. Publications, events, techniques, and resource listings."