From the surface, there’s not much going on in the orchard at Burwell Farms in rural North Carolina: loblolly pines grow in perfect, orderly rows, brown trunks and green needles in a hypnotizing grid ...

Black truffles are most often associated with the European countryside. But as wild truffle habitats have declined, truffle farms in the U.S. are taking root. There are more than 100 truffle orchards ...