Home, cabin, resort owners and city park officials need to know the importance of eradicating tree-destroying pests like the gypsy moth and cankerworm. Trees may be able to survive one complete defoliation but continued attacks will weaken the trees and make them susceptible to further disease and insect infestation that can lead to death.
Beginning in early spring and continuing through mid-May, insect larvae start feeding on tree leaves as quickly as they hatch. The larvae grow through multiple moulting stages, increasing their appetite and feeding between each moult. This feeding cycle continues until mid-June or early July when the caterpillar finally emerges as a moth.
Airborne Custom Spraying can help you control these infestations. We use a biologically derived pesticide called Bacillus thuringiensis kurstaki (Btk). Aerial applications are most effective when tree leaves are approximately three-quarter developed and caterpillars are one-quarter inch in length. A single application typically provides 100% control of these caterpillars.
Airborne Custom Spraying has been the primary contractor for the US Forest Service and State of Minnesota for gypsy moth Btk applications.