© Tabi Walters

Leaves of Three, Let It Be

A bumper crop of poison ivy

by Eve Silberman

posted 7/4/2011

After a wet spring, poison ivy is "growing like crazy," says former Ann Arbor parks planner Gerry Clark. Besides the rain, some believe that nature's three-leaved pest has been multiplying for reasons that range from global warming to less frequent mowing. Since the U-M Arboretum went from mowing every couple of weeks to once or twice a year, says director Bob

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