It’s peony(Paeonia) time here in North Carolina.
I love all types. Singles, semi-doubles and doubles.
The doubles are trouble though.
They have such heavy blooms that they have to be staked. Otherwise they dip down to the ground, especially after a rain.
I keep a supply of green stakes with open-ringed tops for this purpose.
Peonies like full sun and well-drained acidic soil. They do not like to be divided.
If you must, divide them in the fall. Plant shallow. Side dress with compost.