Copper Hydroxide is used as a fungicide and a high concentration can surely kill your tree.I suggest you do as ripsgreentree suggested
Used as broad spectrum foliar fungicide on fruits,
vegetables and ornamentals (4
. Kocide 101 has been cleared for use
on alfalfa, almonds, apricots, beans, blackberries, broccoli, Brussels
sprouts, cabbage and cauliflower, cantaloupes, honeydews, muskmelons,
carrots, celery, cherry, cranberry, cucumbers, currants, gooseberry,
grapes, filberts, peaches, nectarines, peanuts, pears, peas, peppers,
potatoes, pumpkin, squash, strawberries, apples, eggplant, hops,
lettuce, onion, sugar beets, sycamore, tomatoes, walnut, watermelon,
wheat, and barley (56).