Not sure if really pm ...but if it is , you can salvage them.
If you are looking for an extremely simple way to get rid of the powdery mildew, you should give the tap water – paper towel method a try. Simply get the paper towels wet and gently wipe your infected leaves with them, therefore removing the mildew that is already there. When doing this, make sure you don’t bump your leaves too much, as that could cause spores to enter the air and spread.
Combine one tablespoon baking soda and one-half teaspoon of liquid, non-detergent soap with one gallon of water, and
spray the mixture liberally on the plants. Mouthwash. The mouthwash you may use on a daily basis for killing the germs in your mouth can also be effective at killing
powdery mildew spores.
