Plump rounded buds open to reveal the peachy45pink double scented blooms of tree peony 39hu hong39 there are few plants that can compete with the beauty of a tree peony in full bloom a mature plant can boast in excess of a hundred exotic blooms each measuring up to 25cm 40103441 or more in diameter33 these exceptional shrubs are hardy and disease resistant and will continue to bloom for a lifetime the exotic flowers of the tree peony are simply breathtaking in borders