Permaculture is a verbal marriage of "permanent" and "agriculture." Australian Bill Mollison pioneered its development. Key features include:
use of compatible perennials;
non-invasive planting techniques;
emphasis on biodiversity;
specifically adaptable to local climate, landscape, and soil conditions;
highly productive output of edibles.
This book provides the tools to create an ecological garden, which takes the principles of permaculture and applies them on a home-scale. There is nothing technical, intrusive, secretive, or expensive about this form of gardening. All that is required is some botanical knowledge (which is in this book) and a mindset that defines a backyard paradise as something other than a carpet of grass fed by MiracleGro.