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University of Wyoming Extension

Insects in the Garden

Cottony Maple Scale

Cottony Maple Scale

Cotton balls on your maple? Or on elms, willows, or poplars? Look again. These are the egg sacs of a unique insect pest that is hard to control in adulthood. If physical removal doesn't suffice, a systemic plant insecticide is required.

Photo: Pennsylvania Department of Conservation and Natural Resources - Forestry Archive,

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Alexandre Latchininsky

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Phone: (307) 766-2298

Fax: (307) 766-5025


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