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exactly how much cold does my peony need?

17 years ago

My double pink peony had six beautiful blooms this year. I realize I live in the wrong zone but I am determined to have blooms next year. I have thought of putting a foam ice chest (with the bottom cut out) over the plant and then I could take the top on and off to add ice as needed on the ground to simulate cold weather. My question is, how many hours of cold does it need and when? (what month or months?) Please humor me. I am treating this as a wonderful experiment and I hope it works!

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