Peonies

Question

Do the peonies need to have the spent blooms pinched?

Answer 1

Yes, you should cut the wilted blooms from the plant just below the blossom.

Here are two articles for you:

https://www.gardeningknowhow.com/ornamental/flowers/fgen/deadheading-flowers.htm
https://www.gardeningknowhow.com/ornamental/flowers/peony/peony-pruning.htm