I have a cherry blossom bush that is growing these white scabs that clings to...
I have a cherry blossom bush that is growing these white scabs that clings to the tree bark and there's millions of them. Do you know what they are, and how to get rid of them? I don't want to cut down the plant because it blooms with lots of flowers in the Spring. I live in Scarborough, Ontario, Canada. I have included a picture of the problem. Thank you for your help.
Outside United States
This looks like scale from the pictures. The safest control is horticulture oil. I am not familiar with systemic chemicals labeled for use in Canada. You may be able to search for that information now that you know you are trying to control scale on cherry.