Thanks for the tips on your experience with your tree peony. I have
regular (bush?) peonies as well as my tree peony, and when it comes to
ants, the same experience: The regular peony attracts ants, the tree
peony does not.
I didn't prune mine last year because I thought (correctly, as it
turned out) that the seed pods and stems would be attractive in the
winter landscape. However, it looks a little ratty now that spring is
here, which is what had me wondering if I should have cut it back.
And now, Bill, you've got me wanting to check out upward-facing tree
peonies, too, LOL!