Cathy Corison, Owner, Winemaker and Vineyard Manager of Corison Winery on Napa Valley’s Highway 29 in St Helena, joins us to tell us why this is the time of year that the winemakers of Napa Valley prune grapes off their vines. Hint – it’s all about making the best wine possible! For more news on this vintage and past vintages, visit HarvestNapa.com.