Answer: I am mystified. The Cowart should serve as a pollinizer unless it blooms at a different time from the Scuppernong you grew from seed. You might find the information at the following Clemson University page helpful in determining a more likely pollinizer based on bloom times. http://hgic.clemson.edu/factsheets/HGIC1403.htm I'm sorry I can't be more helpful.
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