“Healthy vines will be more cold hardy than weak vines,” said Terence Bradshaw, UVM Research Tree Fruit and Viticulture specialist.
A vine’s ability to tolerate cold depends on its physiological state and its genetics. A fully dormant plant will be much more tolerant than one deacclimating during a spring thaw. Similarly, before reaching full dormancy, vines may be injured by a sudden fall frost. Breeders select grape varieties for their tolerance of certain temperature ranges. [Read more…]