Spotted some mildew on Leaves

LOL, you are outdoors? I removed the first reply because it only applied to indoor context. Good luck... you are at the whims of mother nature, lol. Different suggestion: manage it as best you can by removing it.. as it inevitably spreads in a losing battle, you'll have to make a choice of when to harvest to save some vs total catastrophe. small chance you remove it and not see it again if outside. Could try this: growdiaries.com/grow-questions/77295-overfertilization-or-too-much-stress "The UV-C light treatment must be delivered in high doses at low speeds and at night to circumvent the natural defenses of powdery mildews to UV." Could buy one of those UV-c wands and treat each plant in the dark -- uv-c applied in dark is important - article explains why. Useless to apply in the daylight.