Backyard Blitz: Garden Therapy: Renovation of a rooftop in Australia, including materials and plants used.
Building a Rooftop Vegetable Garden: Guide to building a simple container garden without soil.
Do It Yourself: Watering and Irrigation: How to customize a drip irrigation system for a rooftop garden.
ELCA: History of Rooftop Gardening: Chicago vegetable garden started in 1993. Includes how to use plastic wading pools, tires, and feed sacks as containers.
Flower & Garden Magazine: Up On The Rooftop: Article by Keith Corlett with an emphasis on highscaping in New York City.
Food Share: Rooftop Gardening: Includes introduction, garden types, considerations, soil, water, plants, containers, and links.
Greenroofs.com: Greenroofs 101: Includes FAQ, plant lists for Europe and the US, advantages and issues, and a bibliography.
IDRC: Garden on Your Rooftop: General advice for starting a rooftop garden.
Old MacDonald Had a Penthouse: Article on rooftop vegetable gardens in New York City. Includes a slide show.
Peggy Notebaert Nature Museum: Making Your Roof Green: Includes design considerations, construction with photographs of the museum garden's development, plants, tips, and links.
Sfgate.com: Rooftop Pleasures: Guide to publicly accessible gardens in San Francisco.
Sunset: Heavens Above: Profiles of gardens in San Francisco and Seattle with a focus on containers.
The Victory Garden: Rooftop Oasis: Creation of a garden on a small Boston rooftop. Includes sketches, design considerations, and partial plant list.