When can you transplant peonies?
They were planted under a tree that grew too. big . Need to be moved to a sunnier location.
Certified GKH Gardening Expert
If they bloom at all under the tree, I would wait till after the next bloom to move them. They don't like to be moved, and it may be a few years before they bloom again. They can either be transplanted as a whole or divided out. This article will give you more information: https://www.gardeningknowhow.com/ornamental/flowers/peony/dividing-peony-plants.htm