Life Style / Wine Grapes / Valiant: Claimed as extreme cold-hardy to -50 deg. F (ca -42 C.) red wine grape cultivar developed from Fredonia x Wild Montana (V.riparia) cross at South Dakota State University. Requiring a dry climate it is very susceptible to the mildew diseases. Unusual extreme cold tolerant cultivar in that it is capable of low acids (<1%) and high sugars (up to 20%). Daylight sensitive, it commonly goes dormant around September 1st. Currently grown in Minnesota, S. Dakota and in some other US and Canadian midwest regions including Manitoba, Canada where it reportedly needed no winter protection. Mostly used in blends, but can make agreeable jelly and is recommended by some as a (small berry) tablegrape. Listed as ripening about three weeks before Concord.
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