Frontenac (grape)
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Frontenac is a French-American hybrid grapevine that is a result of research and cross-breeding by the University of Minnesota. It was grown from a crossing of the complex interspecific hybrid Landot 4511 and a very cold hardy selection of Vitis riparia. It was released in 1996.
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[edit] Vine and viticulture
The vines produce loose clusters of dark, highly acidic, high sugar berries. Frontenac is quite vigorous, extremely cold hardy (below -30C), highly resistant to downy mildew, and resistant to powdery mildew and botrytis.
[edit] Wine characteristics
Frontenac has been used for the production of dry red wines, rose, as well as for fortified wine in the style of port. The wines produced from Frontenac typically present aromas of cherry and other red fruits.
While producing a pleasing wine, the ripeness of the grapes are difficult to judge from sugar levels alone, and wine-makers are often challenged by its high acidity and atypical pH levels.
[edit] Regional production
Although the grape has a very short history, its promise as a wine grape for very cold regions has led to many plantings across the northeastern part of the United States and Canada. The variety is now the most commonly planted wine grape in Minnesota.[1]
