If it is spring in Charlotte, it is time for cankerworms.
The only way to stop the April cankerworm problem is in November or early December by applying a band of paper-like material around the tree and then adding a coat of sticky material. The bands trap the females before they can lay eggs in upper parts of the trees.
Over the past 20 years, the cankerworm population in Charlotte has grown, despite aerial spraying in 1992, 1998 and 2008. Repeated defoliation can weaken trees and make them more susceptible to other stresses, such as age, drought, other insects and disease.