Dave Jacke has been a student of ecology and design since the 1970s, and has run his own ecological design firm—Dynamics Ecological Design Associates—since 1984. Dave is an engaging and passionate teacher of ecological design and permaculture, and a meticulous designer. He has consulted on, designed, built, and planted landscapes, homes, farms, and communities in the many parts of the United States, as well as overseas, but mainly in the Northeast. A cofounder of Land Trust at Gap Mountain in Jaffrey, NH, he homesteaded there for a number of years. He holds a B.A. in Environmental Studies from Simon's Rock College (1980) and a M.A. in Landscape Design from the Conway School of Landscape Design (1984). You can learn more about his work at edibleforestgardens.com. He lives in Keene, New Hampshire.

Eric Toensmeier is the award-winning author of Paradise Lot and Perennial Vegetables, and the co-author of Edible Forest Gardens. Eric is an appointed lecturer at Yale University, a Senior Fellow with Project Drawdown, and an international trainer. He presents in English and Spanish throughout the United States, Canada, Mexico, Guatemala, and the Caribbean. Eric has studied useful perennial plants and their roles in agroforestry systems for over two decades, and cultivates about 300 species in his urban garden. His writing can be viewed online at perennialsolutions.org.