The imported cabbage worm is making its appearance this time of year. White eggs are laid by white butterflies and hatch into fuzzy green worms. If not controlled early, managing this pest is much more involved and plant injury can be extensive.
Organic treatments for cabbage worms include: BT (Bacillus thuringiensis) (Dipel, Thuricide and others) and Spinosad (Monterey Garden Insect Spray, Captain Jack’s Dead Bug Brew). If using BT, apply it late in the day or on a cloudy day; the pesticide’s efficacy is affected by sun exposure.
Cynthia Domenghini, Extension Agent
