Craig LeHoullier is the author of Growing Vegetables in Straw Bales and Epic Tomatoes and the tomato adviser for Seed Savers Exchange. In the last 30 years, he has trialed more than 1,200 tomato varieties and has introduced more than 100 varieties to the trade. He lectures widely, from local Master Gardener groups to Monticello, the Philadelphia and Northwest Flower Shows, and Seed Savers Exchange.