Answer: I suspect the wet weather is to blame for the browning leaf tips. Cherry trees can develop a fungal disease, especially if the spring is wet. It's too late to do anything to stop the problem now. I think as the ground dries out your tree will get healthier. Neither the mulch nor the peat moss will contribute to the problem. Overly wet soils can really stress the roots of trees and shrubs. Let's hope next spring is not as wet!
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