Powdery mildew

Hi, I have an outdoor garden, unuasually high humidity, I have powdery mildew. anypne know the best cure. Thank you

You can add a tablespoon of baking soda to a gallon of water and a tiny drop of dish soap to help it spread on the leaf surface.

Cover the whole plant with the spray and reapply after it rains. What this does is raise the PH of the leaf so that the spores of PM can not germinate. Feed the plant some Calcium because it will strengthen the cells of the plant which helps with natural resistance.