Which one? the purple one is herbaceous peony, not an Itoh.

It is the purple one--do you know what variety it is? Yes, stems died back to ground like herbaceous.

The purple one is just a herbaceous peony, not "Julia Rose" or other Itoh.

the yellow one, though, is itoh

So sorry that you paid the price of an expensive itoh for a common herbaceous peony. If you still have the receipt, you should take it back to Lowes for a refund. This year I found that I got some mislabels and I was very frustrated with that.