persistent powdery mildew on peonies

I replanted these small peonies plants from a shady area to a sunny area near our house. But for the second summer in a row, they have severe mildew on them. Neem oil did not prevent it. From what I have read, once it starts you can’t stop it.
What should I do at this point. It is only the end of May. So should I remove the foliage, and burn it? Should I just leave it? Or should I remove the diseased plants and put in new healthy ones?
If I put in new ones, is it dangerous to put them in the same area?

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1 Comment To "persistent powdery mildew on peonies"

#1 Comment By Downtoearthdigs On 06/01/2017 @ 7:43 am

This link will help you with more information.

You can look for cultivators that are resistant to Powdery Mildew.

I have this issue with my Bee Balm in my garden and though I could tear them out and replace, I have had luck with spraying them with Neem Oil every 2 weeks from the time they emerge from the soil.

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