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Grapevine Hardiness and Using the USDA Hardiness Zone Maps

Rick Dunst, Viticulturist, Double A Vineyards, Inc.   Winter injury caused by low winter temperatures is an important limiting factor to grape production in many regions the United States.¬†Our¬†Grapevine Characteristics Chart lists grape varieties by their winter hardiness according to USDA hardiness zone. Hardiness is determined by using a number of sources, including university publications, …

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