Problems of Alder Trees

Webbed Nests in Alder Tree Branches With Leaves In Vicinity Chewed
Tent Caterpillars – These caterpillars are black and hairy with white stripes and have narrow brown and yellow lines and a row of blue spots along their sides. The pests grow to be about 2 inches long in large silken nests in the forks of tree branches. They feed on tree foliage. To control tent caterpillars, remove as many of the tents as possible by hand. Destroy the caterpillars within. For more information see the file in on Controlling Tent Caterpillars

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