Nathan Corymb trained in Biodynamic agriculture at Camphill village Kimberton Hills. Between 1991 and 1993 he trained in Biodynamic seed growing at Sativa Seed in Switzerland and Bingenheim Seed in Germany. With his wife Beth he founded Turtle Tree Biodynamic Seed Initiative and developed it as a sheltered workshop where it continues at Camphill Village in Copake, NY. In 2010 they moved to Nebraska and began Meadowlark Hearth Farm where they developed wholesale Biodynamic Seed production along with a CSA, dairy, beef, poultry, and market vegetable production. At Meadowlark Hearth they integrate farming and seed work into education and therapeutic work under the auspices of the Living Environment Foundation, a non-profit with a two-fold focus on biodiversity and serving vulnerable populations. As well as having online seed sales at www.meadowlarkhearth.org, each year they grow contract certified organic and Biodynamic seed for a number of U.S. seed companies.