Thank you so much. I have a call in to an arborist for more info. I probably will use copper also. I can't think that it will hurt if I watch the dose. I wanted this tree for the leaves. There are no others like it. I already have about 28 different kinds in my gardens. This was just a very special one that I want. I will get another one if it doesn't make it. I just won't keep it on that side of the house if I buy a new one. :'( Thanks again.
As a lover of Acers/Maples (three of my own) you have my sympathy on your diseased Maple, There may be something in this thread at UBC forums. http://www.botanicalgarden.ubc.ca/forums/showthread.php?t=62170 Good luck for sure! K.....