caused by bronze birch borer
|Like most other
borers, these insects thrive on stressed trees. Healthy, well fertilized trees can are less
susceptible to borers. Mulch trees to
prevent mower injury, moderate soil temperatures, and soil moisture.
should be treated with a long-lasting residual insecticide when adults begin
to fly. Coat the leaves to kill the
adults that feed on them. Coat the
bark to kill larvae that hatch from eggs.
Applications of imidacloprid on newly planted tree has been shown to
reduce attacks of transplants by bronze birch borer.