Petunia Plants
Q.

best control of powdery mildew in greenhouse

Zone springfield mo. 65804 | kayjohnson1436 added on February 4, 2018 | Answered

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

A.
A.Answers to this queston: Add Answer
BushDoctor
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: https://www.gardeningknowhow.com/special/organic/

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