Yes! I did once. The roots must have gone all the way to China. It was that moment that I realized moving anything else to accommodate the tree peony growth would have been well worth it, no matter how many bulbs and plants needed to be dug. It did survive the move but let me know it that first spring afterwards by producing one bloom, just enough to make me aware that I hadn't killed.
ITOHs seem to inherit more of the root depth from the tree peony side of the gene pool or so it seems.
