When you grow peonies it’s very important to remove faded flowers. By removing spent blooms you’ll encourage your plant to produce more flowers throughout the growing season. By cutting off the faded flowers you will give the remaining buds a change to mature and reward you with more gorgeous blooms this season.I always cut off the flower stem to the first set of leaves More useful content about peonies and 7 reasons why they they sometime don't flower are included in my book.Link to the book is