The cultivated productions of the Mountain section are sweet corn, wheat, oats, barley, hay, tobacco, fruits and vegetables. Cattle are also reared quite extensively for market, and large numbers of chickens are raised for market in the northwestern mountains and foothills. A prominent new industry in the mountains is the raising and selling of Christmas Trees. In the Piedmont region of central North Carolina are found all the products of the mountains, although over the southern half cotton appears as the staple product. In the deep, loamy soils of the coastal region, cotton, corn, and oats are the staple crops, and truck farming (growing fruits and vegetables for northern markets), constitutes a flourishing industry. Formerly longleaf pine forests produced tar, pitch and turpentine, and more recently lumber. Little old growth longleaf area is left; much has been replanted in loblolly pine, which is used for paper pulp, plywood, and lumber. Four of the grape varieties of America are native to North Carolina; the Catawba, Isabella, Lincoln, and Scuppernong.