or two. Other symptoms of Verticillium wilt may include: marginal browning and scorch of leaves, abnormally large seed crops, small leaves, stunting, poor annual growth, and sparse foliage. Your tree looks well leafed out, so this is possibly something else.
Click on "Find an Arborist" at the top of the page; then click on United States from the pull-down menu. Then enter your State and City. This should bring up a list of certified arborists nearest to you. Or you may be able to locate one under "Tree Services" in your local Yellow Pages.
An arborist will also understand the proper protocol for disposing of infected trees and proper disinfection of tools.. Since immediate removal of infected trees is not necessary, you may want to first (even before consulting an arborist) consider confirming the disease through testing at the MSU Plant & Pest Diagnostics Lab (https://pestid.msu.edu/).
Michigan State University Plant & Pest Diagnostics is still processing mail-in samples (but not in-person drop off samples) during the coronavirus pandemic. Here is the proper protocol:
For plant health assessment samples and plant identification, please send a preliminary email to email@example.com with digital images to see if a diagnosis/identification can be made without a physical sample. Please remember to photograph the injury symptoms both up close and at a distance, as well as include details on any patterns, timing, chemical applications, etc. Include a close-up photo of some leaves also. This is the same information typically requested on the MSU PPD submittal form.Also check out the following links: