Treatment Timing and Prevention
Plant Birch in a cool, moist, shaded environment. They do not grow well in an open, sunny, exposed area, such as the middle of a large, open yard or the exposed south or west side of a building. Further, this species prefers to l ay eggs on trees growing in full sunlight. Keep birch trees healthy by watering and fertilizing as needed.
Soil-applied systemic insecticides as well as trunk injections, for the larger trees, have been shown to greatly reduce injury and protect the tree(s) from this pest.