Until recently, most green rooftop gardens were little more than variations on sedum mats on four inches of soil. Now, designers are creating cutting-edge green roofs that focus not only on critical environmental issue like heat, storm management, and ecosystem development, but also on the aesthetics, offering beautiful, livable, sustainable landscapes. "The Professional Design Guide to Green Roofs" is a comprehensive exploration of rooftop garden design and the process behind it. It covers everything landscape architects and garden designers need to know to create a beautiful garden in the sky. With lush photography, international examples, and solid how-to information, this is an essential resource for all design professionals.