As he walked up and down the rows of barren February grapevines, pruning several wiry ones along the way, David Pagan Castaño seemed in his element.
Read moreThrough the grapevine: 3rd-generation Spanish winemaker brings experience to Virginia vineyard
David Pagan Castaño, head winemaker at Potomac Point Vineyard and Winery in Stafford, Va., examines grapevines that need pruning, Friday, Feb. 2, 2018. (LINDSEY LEAKE/AMERICAN UNIVERSITY)