Knowledgebase
Fungus or pest on my tree. #876542
Asked July 09, 2024, 4:45 PM EDT
Oakland County Michigan
Expert Response
That looks like Magnolia scale. There are different ways to treat it. https://hort.extension.wisc.edu/articles/magnolia-scale/
Possibly a systemic insecticide drench along with a spray of Neem oil, or horticultural oil would work for you. Scale can be difficult to control.
Good luck.