John from Mi writes
oil spray vs copper vs ? timing for Michigan?
We carry a couple of products that are labeled for peach curl, Docket DF containing Chlorothalonil and Bonide Copper Liquid Fungicide which contains Copper Octanoate (Copper Soap). Either would do a great job for you. Please contact your local cooperative extension office to determine the correct timing of the application as this will vary greatly from region to region.
Answer last updated on: 12/01/2013