A permaculture site is divided into zones. Understanding the five zones allows for a design that considers the most effective placement of components and how they relate to each other. Each zone has a different requirement for maintenance and function. Zones 1 and 2, or areas needing the most attention, are placed closer to the home and heavy traffic areas while zones 3, 4, and 5 radiate out from heavy traffic areas as upkeep needs become less intensive. Oregon State University Free Permaculture Course (http://open.oregonstate.edu/courses/p...)