David Hochheimer and Emily Zaas, Carroll County, MD Black Rock Orchard is a family-owned orchard located in Lineboro, Maryland on the Mason-Dixon Line. With 92 acres of land, David Hochheimer and Emily Zaas grow 77 varieties of apples, peaches, pears, nectarines, plums, apricots, blueberries, gooseberries and more. To extend the growing season, Black Rock Orchard has 3 greenhouses to grow heirloom tomatoes in the spring and fall. This spring, heirloom varieties include Carbon, Mortgage Lifter, Purple Zebra, Amy Apricot, Black Cherry and more. The greenhouses have the added value of extending the work of the farm into the colder months. Website