This document outlines the gypsy moth concerns in Catoctin Mountain Park and presents available control options. Gypsy moth egg mass surveys, completed in 2000, indicate that gypsy moth populations are sufficient to cause significant tree defoliation in a portion of Catoctin Mountain Park. Approximately 800 acres of the park have egg mass densities above the U.S. Forest Service threshold for treatment.
Treatment is recommended when defoliation is likely.
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