Answer: You are correct - white grapes are not as happy in the heat & humidity of the Deep South as your bronze muscadines, which are native to the area. Some light shade in mid-day is helpful, and consistent moisture is a must. Breeders have developed some varieties of seedless white (light green) table grapes that will produce fruit in USDA zones 7&8, such as 'Orlando Seedless' and 'Stover' (both available from Ison's Nursery & Vineyards, Brooks, GA 30205; ph# 800/723-0324). I don't know that these require shade, but I'm sure the supplier can give you details. Hope this helps!
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