Quote:
Originally Posted by jmsieglaff
Thanks for the recipe! My squash will get powdery mildew every summer at some point. I'm going to try this recipe. I can readily get KaHCO at my local homebrew supply store. Like anything, I imagine getting things early is key.
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I have mixed 1oz of Neem Oil with the recipe also and bumped the soap up to 2 teaspoons or so to emulsify the oil better. That works too, maybe even better coverage. Neem oil has its own fungicidal properties so the combo is good.
You have to get full coverage of the squash since the powdery mildew attacks the whole plant, top and bottom of the leaves and the stems. You have to re-spray once sometimes twice a week since the PM will come back with a vengeance if you don't.