General Characteristics: Tree Peonies usually take 2 - 3 years to become established and bloom heavily. In a mild climate, a tree peony will reach a shrub-like size up to about 4-5 feet in several years. In very cold climates, it will attain full height at about only 2-3 feet. Once established, Tree peonies are best left undisturbed.
When choosing a site, tree peonies perform best in partial shade since the flowers tend to fade in full sun.
Tree Peonies prefer evenly moist, well-drained soil with a pH close to neutral. If your soil is extremely acidic, it is recommended that you add some lime when planting.