best control of powdery mildew in greenhouse

What is the best control of powdery mildew on potted petunias in greenhouse

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1 Comment To "best control of powdery mildew in greenhouse"

#1 Comment By BushDoctor On 02/04/2018 @ 4:12 pm

I prefer neem oil, as long as you do not apply it is direct sunslight. This will take care of the issue quickly. An alternative would be to spray with a mix of one part peroxide, and three parts water.

Here is an article that will give you many other ways to control insects, fungal/bacterial infections, and many other ways to make these yourself: https://www.gardeningknowhow.com/special/organic/ ^[1]

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