The chrysalis of the last generation spruce hibernates in the fallen leaves. In the spring, adult insects are released from the pupae and reside in large numbers on tree trunks, where females and males mate. Then the female lays eggs on the leaves, and the hatching larvae bite into the leaves. So far, it has not been found that the horse chestnut leaf moth Cameraria ohridella has natural enemies in our country, but some time ago it was observed that titmouse learned how to extract larvae from the leaves. Until recently, it was believed that the best way to combat this species was to drill into the trunks of attacked trees and to introduce special gels with an insecticide into their conductive system.However, this method interfered too much with the tree's life processes and turned out to be very harmful to the plant. In autumn, you can rake leaves in which the chrysalises hibernate. In spring, put a sticky band in the middle of the trunk.Butterflies that gather on the trunks will stick to the bands and die.By using the above-mentioned methods, you can somewhat reduce the risk of the white chestnut trees being attacked by the horse moss. When choosing plants for planting, instead of white horse chestnut, choose other species of horse chestnut, e.g. red, which are very poorly inhabited by this pest.
