Type in curly leaf at Google. You can find the sprays (copper, sulfur, fungicide, oil). You need to use them in the fall. But once you have it, you have it, and it probably won't go away. My family use to grow peaches, wine grapes, and almonds...In a simpler time.
Lol I use it daily, highly recommend... they take a few hours to build, gym quality just $280 each.... just bought in January, wish I'd gotten years ago