John from Blaine writes
Phostrol Fungicide is not labeled for peach leaf curl, but you may consider using Bonide Liquid Copper Fungicide Concentrate which does list peach curl on the product label. Mix 0.5 - 2.0 fluid oz. of product per gallon of water, and apply 1.1 - 2.3 gallons of diluted spray per 1,000 sq. ft. applied as a dormant spray in late fall to before bud break, repeating application every 7 - 10 days as needed.
Answer last updated on: 04/04/2021
