Longtime grape supplier Silverado Winegrowers to expand the Garnet brand with Monterey label.As yellow sprays of mustard blossomed between rows of Saintsbury Carneros Pinot Noir vines, modern-day Pinot Noir pioneers Richard Ward and David Graves discussed the sale of their signature Garnet wine brand and one of their two winemaking facilities to longtime grapegrowers Silverado Winegrowers.