If you need a larger plant, you may want to start with a peony that is potted and actively growing. Bare root peonies are often the same size division, but they take a little longer to establish. Bare root peonies should be planted in early fall, while potted peonies can be successfully planted any time during the growing season. Think sun when choosing a site for your peonies. While they will tolerate light shade, they will bloom better in full sun.
Peonies prefer rich, well-drained soil.
Choose a site where they won't have to compete with aggressive root systems, such as trees or shrubs. Keep in mind that the plant will get 2-3 feet wide and tall. Leave it plenty of room so the plant can get good air circulation and light. Dig the area at least 12 inches deep, loosening the soil, breaking up clods and mixing in composted manure. Peonies prefer neutral to slightly alkaline soil.