The disease is common on winged and American elms, but attacks all elms. Identifying the Cause. Consult a specialist. Identifying the Injury. Leaves wilt, become chlorotic, and their margins curl upwards.
Defoliation follows, and the crown appears bushy.
Defoliation and death can occur in a few weeks. Some of the brown, wilted leaves persist, separating these symptoms from Dutch elm disease. This disease is identified by the butterscotch discoloration of the inner bark of the host tree. A wintergreen odor can sometimes be smelled after placing the affected bark in a vial or plastic bag. Butterscotch discoloration of inner bark.