I have a DIY potion for you I'm you noticing three areas on the top of your leaves and some gray spots and the underside of your lease if you have noticed that you have powdery mildew and powdery mildew can cause some major problems and can actually kill your plant material if you don't get control of it now powdery mildew can be caused by a couple of different things but mostly it's where the foliage cannot dry the plants are planted too close together or is being the plant materials being watered improperly so a simple DIY potion that you can make to spray on the plant material once you see the signs takes garlic and a gallon of water now what you're going to want to do is you're going to want to mix a cap and a fourth of garlic powder I know that sounds like a lot but a cup and a fourth of garlic powder to a gallon of water make sure that it is completely mixed once you've done that apply it to the top and bottom of each leaf now just don't do this haphazardly you really need to get out there early in the morning and apply this DIY potion to really get control of the powdery mildew so the next time you see those symptoms gray areas on the top of the surface and gray spots underneath leaf mixture that you try this DIY potion other suggestions i would have to make is make sure that you water in the morning and only water the soil as i stated before powdery mildew is caused by improper watering while you don't have control over mother nature you do have control over how you irrigate the plant material so until we meet in the garden again you