Gypsy Moth Egg Mass Control: Volck Oil Timing and NJ Program

Volck Oil for Gypsy Moth Eggs in Central NJ

Volck oil kills egg masses only if you find and coat every mass—nearly impossible. Eggs hatch at bud break; oil application window likely passed.

Better Approach

1. Contact NJ Dept of Agriculture, Gypsy Moth Section (609-292-5442) for 2008 suppression spraying program.
2. Homeowner tactics: remove egg masses (burn/soak in kerosene/soapy water), burlap bands for caterpillar collection, sticky barrier bands on trunks.
3. Diversify plantings with non-preferred species (tulip poplar, honeylocust, ash, conifers).

Mechanical Control Limits

Effective only at low populations (<10 egg masses/acre). High populations need aerial spray.