Intersectional peonies are also referred to as Itoh peonies after Toichi Itoh, a plant breeder who was successful in hybridizing a tree peony and an herbaceous peony in the 1940s.

Bartzella Itoh Peony (Paeonia ‘Bartzella’) These peonies feature large (6 to 8 inches across) double blossoms in a buttery shade of bright yellow with centers that are stained slightly reddish ...