Peony Tree Characteristics
Unlike other peonies, Tree Peony have woody stems that should not be cut to the ground after the growing season. Pruning may be desired from deadheading spent flowers or cutting away dead foliage, or to shape. The foliage may become leggy. Prune tall branches if the shape becomes leggy to encourage growth near the base. Tree Peony takes years to establish and should not be transplanted due to the deep roots.
Tree Peony rarely have serious disease or insect issues. Ants are attracted to the large flowers but are not harmful. Canker, leaf blight, stem wilt, and scale are all possible.