Here are some photos of the peonies grown from seedlings found in my garden.
This is the first one that I saved, probably about 5-6 years ago.
This is the newest one that I just moved this spring. It is 3 years old and this is its first bloom.
This one is 5 years old. This produces variable flowers with some being more double than others. It also fades to develop a silver edge. I will take some more photos of this one.