My Amur Maple tree allee is suffering from Verticillium wilt. This disease is found in catalpa, redbud, maples, and Russian olive. I have lots of redbuds without this disease. Affected trees show a rapid wilting and drying of leaves in a portion of the tree crown, or in some cases, throughout the entire crown. Vascular discoloration can sometimes be seen on the cut ends of wilted branches.
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