Take Control Of Powdery Mildew | Edible San Marcos's Blog
Wash Off Plants – Simply washing off your plants will help to wash off the spores. Once your plants have powdery mildew, it is important to wash the spores off before you spray on a fungicide. Water In The Morning – watering in the afternoon and evening creating a damp humid environment. Powdery mildew thrives in moist conditions.