Check out this great video we found from the National Arboretum about the science of trees & how they “wake up” for spring.
“How do Trees Know it’s Spring?”
4-13-15 Video by The Atlantic
It’s a warm, sunny day in April, and all the trees are in bloom. But how did they know it was warm and sunny? And on a warm, sunny day in February, what keeps them from blooming? Scott Aker, a horticulturalist at the U.S. National Arboretum, tells Robinson Meyer how the process works and what to look for.
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