How close can peonies be planted?

I want a hedge like, compact effect an d decided to plant my peonies about 12 inches apart. All 22 of them. after all that work\, I am rethinking the whole thing and wonder if they will still bloom. Any suggestions/ideas/comments? Thanks!

How close can peonies be planted?
Mine are about two feet across, so I would think 12 inches might be too close--maybe 18 inches. Hopefully you planted them the correct depth, otherwise they won't bloom. I have had my peonies for over 30 years, only problem is getting lots of aunts on the buds.
Reply:It would help to know if you are talking about the perennial, or shrub varieties? If perennial Hybrids, 12 inches would be minimum amount of space apart as they do once established form rather large clumps. Also you have to know that they do not like having their roots disturbed. They like a sheltered position, in full or slightly filtered position but with soil kept cool and moist.

Mulch and feed with well-rotted manure when leaf growth starts, but definitely at this stage do not disturb roots.

All Peonies are deciduous, and will die back to the ground in autumn.

Not exactly a plant to use as a hedge effect, unless planting with other perennials or annuals as there will be a large gap in your garden when they do die back.

Good luck though
Reply:Sure they'll bloom in the spring. Bad news is they die back to ground level in the winter. 12 inches apart is going to be very compact!