The peony is named after Paeon, a student of Asclepius, the Greek God of medicine and healing. Asclepius became jealous of his pupil; Zeus saved Paeon from the wrath of Asclepius by turning him into the peony flower.
The tree peony Paeonia rockii is indigenous to the Gansu province and surrounding areas in Northwest China. Paeonia rockii is named after the American Botanical adventurer Joseph Rock who introduced it to the West in the 1920s. Since it first came to the attention of American gardeners it has been highly prized and sought after, just as it has been in its native land for centuries. The peony is one of the longest-used flowers in ornamental culture of China. Once established they are drought tolerant and require very little care.
USDA hardiness zone 3 to zone 9