What are these bumps on an Oak Tree?

Asked June 13, 2016, 10:30 AM EDT

I discovered these small bumps on my white oak tree. They look like they are egg sacs. Can you tell me what it could be and how to fix this?


Michael Looney

Crawford County Michigan

1 Response

Looks like Lecanium scale.
Generally they are not a problem but I have seen a lot the last couple years.
Here is some information on control.