Tree peonies are exquisite plants that will hugely reward your efforts. They require a good location and a keen hand to grow. They are slow growing deciduous shrubs that have lush spring foliage and stunning flowers. They require some sun and a high pH (6.5 - 7). A good dose of Ag lime is recommended to amend pH and calcium. Once established they will survive in harsh dry conditions as they are dormant in summer. Their slow growth habit requires a sheltered location away from large vigorous plants like trees that may out-compete the peony for nutrients.