My azalea

Question

My azalea bushes have milky white substance on leaves and I would like best information on treatment. There is 20-25 bushes part shade and afternoon sun.

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Answer 1

This appears to be Powdery Mildew.

Here is a link that will help you.

https://www.gardeningknowhow.com/ornamental/shrubs/azalea/common-azalea-problems.htm
https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm