Beth and Nathan Corymb trained in biodynamic agriculture at Camphill village Kimberton Hills. Nathan trained in biodynamic seed growing at Sativa Seed in Switzerland and Bingenheim Seed in Germany. They founded the Turtle Tree Biodynamic Seed Initiative and developed it as a sheltered workshop for people with special needs, where it continues at Camphill Village USA in Copake, New York. In 2010 they moved to Nebraska and began Meadowlark Hearth Farm (, where they developed wholesale Biodynamic seed production along with a CSA, dairy, beef, pork, poultry, and market vegetable production. At Meadowlark Hearth, they integrate the 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 their own online seed sales, each year they grow contract certified organic and Biodynamic seed for a number of U.S. seed companies.