jelly fungus on flowering cherry

[old dude]

What do you guys think of treating jelly fungus on a flowering cherry with a combination of copper sulfate and diazinon spray? What has worked best for you?
Old dude

 

[jimmyq]

diazinon for a fungus issue? any reason why?

 

[woodville]

Wow old dude thay stopped selling diazinon back in 2004! Anyway diazinon is a pesticide and will do nothing for fungi. I'm not sure what is causing the jelly like substance on your cherry but around here Ma what we have is black knot fungi and other bacterial blights that can cause jellylike structures. The copper sulfate should help but it really should be applied early.

 

[woodville]

:monkey: On second thought lesser peach tree borer might also show up and cause this so adding a little kick to the mix might not be a bad idea.