Plant bare root peonies no deeper than 2" below the soil line. Potted peonies can be planted with the soil of the pot even with the ground's soil line. If initially planted too deep, when the plant is dormant in the fall you can raise it up a bit.
In conclusion, if your peonies aren't blooming, there are several possible reasons why.
By addressing these common issues, you can help ensure that your peonies produce the beautiful, fragrant blooms you've been waiting for.