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I've tried the milk and water thing for black spot and it does work. My problem is I have climbers that are really big and the pump sprayer can't reach. My hose end sprayer would reach far enough, but I don't know how to set the dial to get the ratio right. The ratio I use in the pump sprayer is 1 cup milk to 11 cups water. I can set the dial on the hose end sprayer from 1 tsp to 1 cup per gallon. If I make it more dilute will it still work?
Then I found this recipe on Howard Garrett's website.
3 Tablespoons natural apple cider vinegar in one gallon water. Adding 1 tablespoon per gallon will help.
Has anybody tried this?
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