Caleb Warnock is a USA Today bestselling author of 24 nonfiction books, including 276 Edible Wild Plants of the United States and Canada, Backyard Winter Gardening, The Art of Baking with Natural Yeast, Successful Gardening in Utah, and Forgotten Skills of Self-Sufficiency. He is an expert on gardening and self-reliant living and has taught gardening classes for more than 25 years. He is one of the nation’s leading experts in geothermal greenhouse design, and the creator of the aboveground walipini greenhouse. He owns the nationwide heirloom seed company SeedRenaissance.com.