Plants Fend Off Cold, to a Point

In this Wednesday, Jan. 27, 2016 photo, abundant sunlight, no overcropping, and — most important — innate cold tolerance let this hardy kiwifruit vine breeze through winter unfazed by cold in New Paltz, N.Y. (Lee Reich via AP)
In this Wednesday, Jan. 27, 2016 photo, abundant sunlight, no overcropping, and — most important — innate cold tolerance let this hardy kiwifruit vine breeze through winter unfazed by cold in New Paltz, N.Y. (Lee Reich via AP)

Since they can’t don gloves and a scarf or shiver to keep warm, it’s a wonder that trees, vines and shrubs don’t freeze to death...

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