Rain and Leaf Behavior
Is it true that when a rainstorm is approaching, leaves will turn upward to
Leaves of some trees have stem structure and shape that causes them to turn in the kind
of wind and air pressure that sometimes precedes storms, giving the appearance of turning
upward. They do not catch any additional rain that way.
One scientific answer:
Another Q & A collection on the same question:
And a page of folklore:
Anthony Brach Ph.D.
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Update: June 2012