Petunia Plants

Best Control of Powdery Mildew in Greenhouse

kayjohnson1436 added on February 4, 2018 | Answered

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

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Certified GKH Gardening Expert
Answered on February 4, 2018

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:

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