Peony flowers are easy to take root, too much planting will affect the growth of plants, and the courtyard area is limited, too much planting will appear crowded. Peony is a noble and gorgeous ornamental plant. When flowering, its flowers are large, bright and colorful, which has high ornamental value. Planting two or three peonies in the courtyard can well display the beauty and characteristics of peonies and enhance the landscape effect of the courtyard. At the same time, it avoids the courtyard congestion and maintenance difficulties caused by over-planting.