‘Blanc du Bois’ is a white hybrid grape cross developed by Dr. John A. Mortensen at the University of Florida’s Central Florida Research and Education Center (Leesburg, FL) in 1968. In Mortenson’s original release document, he indicated three descriptors of significance for ‘Blanc du Bois’: (1) early ripening; (2) grows well on its own roots (though rootstocks may be necessary on some soils and for nematodes); and of greatest significance, (3) resistance to Pierce’s disease. In addition, and also of major importance, ‘Blanc du Bois’ has very good wine making qualities. It was named in recognition of Emile DuBois, an immigrant from France to Florida, who planted >150 grape cultivars in the Tallahassee area and produced award-winning wines in his time. ‘Blanc du Bois’ is considered one of the best southeastern cultivars for premium wine due to its balanced flavor and resistances to both Pierce’s disease, phyllozera, and powdery mildew. It grows vigorously with a semi-erect growth pattern and produces medium-sized clusters with large berries. ‘Blanc du Bois’ ripens mid to late July in areas of Georgia west of Atlanta and will yield 1.8-4.5 metric tons (2-5 tons) per acre with good viticultural practices. It is grown throughout the Southeast but is most common in Florida, Georgia, Louisiana, and Texas. Though well adapted to the southeastern climate, it is still highly susceptible to anthracnose. The soluble solids content is on average lower than Vitis vinifera cultivars.
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MidSouth is a red grape that was bred in Mississippi. While it has been used to make wine, it is more often used for products like juice, jelly, or jam. The potential exists for wine production, but it may have best utility as a blending grape. It was released in the early 1980s along with two other grape cultivars, Miss Blanc and Miss Blue. It is currently being grown in Mississippi and Texas, but only on a limited scale. In Mississippi the vine is moderately vigorous and productive. It is well adapted to the heat and humidity of the Gulf Coast area. The wine has some susceptibility to anthracnose, black rot, and other fungal diseases, but appears to be highly resistant to Pierce’s disease. MidSouth is highly susceptible to root knot nematodes.