How to grow peony flowers
As the first of the most famous traditional flowers in China, peony flowers are known as the "national color and fragrance." Mastering scientific planting techniques is the key to cultivating high-quality peonies. This article will systematically analyze the sowing time selection and the entire planting process of peony flowers to help you cultivate high-quality peonies with large and colorful flowers. Analysis of the best sowing time for peony flowers The golden sowing period in autumn is from August to October. At this time, the surface temperature stabilized in the range of 15-20℃, which perfectly matched the ideal temperature for peony seed germination. Autumn sowing can enable seeds to complete the natural vernalization process in the soil, and the germination rate in the spring of the following year can be increased by more than 40%. If the spring replanting plan misses the autumn sowing, spring sowing can be carried out in mid-March. However, it should be noted that the ground temperature rises rapidly at this time. It is recommended to use low-temperature sand storage method to pre-treat the seeds and cover the seeds with sunshade nets to control the temperature after sowing, which can increase the emergence rate by about 20%. Detailed explanation of the whole process of peony flower planting seed selection and treatment Select plump seeds with a diameter of ≥8mm, and use gradient temperature control method to treat them: soak the seeds in warm water at 50℃ for 2 hours, and then transfer to a constant temperature water bath at 25℃ for continuous soaking for 24 hours. This method can increase the water permeability of the seed coat by 35%. The substrate is scientifically proportioned according to the ratio of humus soil: river sand: vermiculite =5:3:2, and the pH value is controlled between 6.5 and 7.0. Adding 200g of bone meal and 100g of calcium superphosphate per cubic meter can significantly promote root development. The precise sowing operation adopts the hole sowing method, with a hole depth of 3-5cm and a row spacing of 20cm × 15cm. Place 2 seeds in each hole, cover with soil, gently press and cover with pine needles with a thickness of 1 cm to preserve moisture and prevent hardening. Sowing density is recommended to be ≤50 holes per square meter. Intelligent environmental control builds a small arch shed to maintain a day temperature of 20-25℃/night temperature of 15-18℃, and control the air humidity at 60-70%. An intermittent spraying system is used to keep the moisture content of the substrate between 30-40%. This environment can shorten the emergence time to about 25 days.
Through scientific sowing time selection and standardized planting management, the emergence rate of peony flowers can reach more than 85%. It is recommended to apply topdressing in the spring of the second year after planting, and plant transplanting in the third year. Regularly monitoring the soil EC value (preferably maintaining 0.8-1.2mS/cm) can cultivate high-quality peony with a plant height of 60-80cm.