Grape breeder Peter Hemstad is also co-owner of Minnesota’s St. Croix Vineyards. His winery won the 2010 Governor’s Cup (top prize) with a 2009 La Crescent dessert wine entered in the International Cold Climate Wine Competition. FELIX NORMAN If a wine grape cultivar can survive the harsh winters of Minnesota, it likely can survive just about anywhere. But for the variety to have commercial potential, it has to make good quality wine. Disease resistance would be a bonus. Cold hardiness, disease resistance, and excellent wine quality is how grape breeder Peter Hemstad describes Marquette, a red wine grape with French […]