"Combining the best of natural landscaping and edible landscaping, permaculture aims for a site that sustains itself and the gardener. The ultimate purpose of permaculture is to develop a site until it meets all the needs of its inhabitants, including food, shelter, fuel, and entertainment. (The word permaculture was coined in the mid-1970s by two Australians, Bill Mollison and David Holmgren.) While it’s the rare home gardener who can follow permaculture principles to the ultimate degree, most can borrow ideas from permaculture to create a new way of landscaping based on production and usefulness."
An Introduction to Permaculture