Planting: The soil should be loose, fertile, neutral and slightly alkaline. Cut off the roots and diseased roots of the planted peony seedlings and put them in a pot or pit prepared in advance. The root system should be stretched, and most parts of the basin or pit should be gently lifted and shaken when filling, and the soil should be sealed tightly, and the root system should be slightly lower than the basin surface or ground level. Water: water once after planting. Peony should not accumulate water, so it should be watered as appropriate during the growing period. In the arid areas of northern China, water before flowering, water after flowering and frozen water are generally used for irrigation. For the convenience of management, potted plants can be cut off and buried underground after flowering. Fertilization: After planting for one year, fertilization in autumn is feasible, mainly with decomposed organic fertilizer. It can be combined with loosening soil, smearing and acupoint application. Chemical fertilizer is often applied in spring and summer, and it is combined with watering before and after flowering. Potting can be combined with watering and applying liquid fertilizer. Pruning: in the same year of planting, multiple rows of stubble should be leveled. After germination in spring, leave about 5 branches, wipe off the rest, concentrate nutrition, and make the flowers in the next year big and bright. Combine autumn and winter to clear the garden, cut the stems, and be thin without flowers. When carrying a flowerpot, trim it into your favorite shape as needed. Intertillage: intertillage in time during the growing season, remove weeds and pay attention to the occurrence of pests and diseases. In autumn and winter, the peony plots for more than two years should be ploughed. Change pots: When potted peony grows to three or four years, it needs to be changed into a big pot with new fertile soil or planted separately in autumn. Spraying: Spraying the mixture of sulfur and stone before germination in early spring, and using the mixture of insecticide and bactericide in summer, once every two weeks as appropriate. Combined with fertilization, chemical fertilizers and growth regulators should be added. Flower forcing: In order to increase festivals or celebrations, peony can be heated about 50 days in advance according to the variety, and the temperature is controlled at room temperature 10-25℃ and the daily average temperature 15℃. Pay attention to keep the plants moist in the early stage, pay attention to ventilation and light transmission after budding, and control the temperature according to the requirements of flowering period after budding. Foliar fertilization should be done at ordinary times to ensure adequate water supply. So you can see flowers at any time in winter and spring. Ornamental: the natural flowering period of a single tree peony is about 10- 15 days, which is shortened with the increase of temperature, and can last for more than one month at 3-8℃. Temporary scaffolding can be used to block the wind and light, extending the viewing time; When potted, it should be moved to a place out of direct sunlight, the temperature is 5- 10c, and the environment is ventilated and transparent. Water according to the appearance and humidity of potted soil, and don't spray flowers, so that the flowering period is the longest. When flowers need to be cut, the wound should be cut or scalded with water. Preservatives or a little sugar should be added to the water of flower arrangement to prolong the flowering time of flower arrangement.