Released in 2003, Frontenac Gris originated from a random single-bud mutation on a Frontenac vine at the UMN Horticulture Research Center. Culturally, it is identical to Frontenac, having high vigor and yields. Hardy to at least -30° F. Disease resistance is good, with moderate susceptibility to powdery mildew and black rot, and near immunity to downy mildew. Small red-gray berries are born on medium sized, loose clusters. Berry splitting and botrytis have not been observed. Suitable for high quality table and dessert wines, possibly ice-wine as well. Wines have aromas that include peach, apricot, citrus, and pineapple. Labrusca and herbaceous aromas have not been detected. Ripens mid to late season.