After several years working in organic agriculture and horticulture, Martin Crawford founded the Agroforestry Research Trust in 1992. Since then he has focused on researching and growing perennial food systems including forest gardens and orchards of nut trees and uncommon fruits. He runs the nursery at ART which propagates and sells many different tree and perennial plants and is the author of Creating a Forest Garden; Trees for Gardens, Orchards, and Permaculture; and other books on ecological gardening.