I have a large mature Kwanza cherry tree, about 20 yrs. old that is confirmed to have
cherry shot hole disease. I have been advised to treat it with a fungicide root drench, as it is too large to spray.
After it lost all of its leaves prematurely late last summer, I raked them up and removed them from the premises, and am now ready to begin with the treatment.
Will this work? I have read several discouraging articles.
Exactly what fungicide should I apply?
Other tips...?