Kermes scale

Asked June 12, 2017, 9:57 PM EDT

My red oak has kermes scale. I've had it root treated for a year and it's still active. One arborist told me you can't get rid of it. True? Is it possible my mountain ash can have it?

Denver County Colorado trees and shrubs

1 Response

Here is a fact sheet on kermes scale from the Kansas Extension servie: It only affects oaks. I would consult another tree company to get an opinion on the treatability of your tree.