Good news for Michigan vineyards: the time grapes have to ripen has dramatically increased over the past few decades. “It’s nearly grown an entire month in just four decades,” said Steven Schultze, an assistant professor at the University of South Alabama. He discovered the shift while he was still a doctoral candidate at Michigan State University. “One of our biggest findings, just since 1971, the growing season in southwest Michigan has increased by 28.8 days,” Schultze said.
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