How to plant and fertilize peony flowers
Peony is known as the "King of Flowers" and its elegant and luxurious attitude is deeply loved by gardening enthusiasts. As a perennial deciduous shrub, peony flowers need to follow specific cultivation points during planting. This article will analyze in detail the golden rule and scientific fertilization system for peony planting to help you cultivate high-quality peonies with large and colorful flowers. 1. Analysis of the whole process of peony planting 1. The best planting time choice Peony flowers have unique phenological characteristics, and the best planting period is locked from late September to early October. At this time, the temperature difference between day and night is maintained at 10-15℃, and the ground temperature is stable at 18-22℃, which not only facilitates the healing of root wounds, but also promotes the germination of new roots. Experimental data shows that the survival rate of peony planted in autumn is 42% higher than that of spring planting, and the flowering rate of the following year is increased by 35%. 2. Substrate ratio and container selection The ideal cultivation substrate should meet the following requirements: humus soil 40%+ coarse river sand 30%+ perlite 20%+ bone meal 10%. The pH value is controlled between 6.5 and 7.2, and the EC value is <1.2mS/cm. In the initial stage, a 25cm diameter plain pottery basin was selected, and a 5 cm broken tile layer was laid on the bottom of the basin to ensure smooth drainage. Gradually increase the container size when changing pots every 2 years to avoid stagnant water and rotten roots. 3. Standardized planting steps (1) Root trimming treatment: retain 15cm of main roots and cut off sick and weak roots (2) Sterilization and disinfection: soak in 800 times carbendazim solution for 20 minutes (3) Planting essentials: The root system is unfolded in an umbrella shape, and the grafted seedling interface is 3 cm lower than the soil surface (4) Backfilling skills: Compacting the soil in layers to form a steamed bun shape with high middle and low four sides 4. After planting, the key maintenance is irrigated with root-fixing water, and then covered with 5 cm of pine needles to maintain soil moisture. Before new buds germinate, the soil moisture is maintained at 40%-50%. Wind barriers need to be built in the northern region, and rainproof canopies should be built in rainy areas in the south of the Yangtze River. Wrap the stalks with straw curtains before overwintering to prevent freezing damage. 2. Scientific fertilization system for peony flowers 1. Base fertilizer configuration plan Add per cubic meter of cultivation substrate: 10kg of decomposed sheep manure +3kg of bone meal +2 kg of calcium superphosphate +1kg of potassium sulfate. Pay attention to fully mix the fertilizer soil to avoid direct contact of the roots with concentrated fertilizer. 2. Precise topdressing during the growth period (1) Germination fertilizer: Apply high-nitrogen compound fertilizer (20-5-5) 50g/plant in early March (2) Flower bud fertilizer: spray 0.2% potassium dihydrogen phosphate +1% urea in mid-April (3) Post-flowering fertilizer: Buried and apply decomposed cake fertilizer 200g/plant in late May (4) Overwintering fertilizer: Apply decomposed manure 5kg/plant + plant ash 1kg3 in ditch at the end of October. Special fertilizers are applied to foliar spraying alginins (1500 times liquid) during the bud emergence period to promote anthocyanin synthesis, and flowering extender (0.01% 6-BA) can extend the flowering period of a single flower by 3-5 days. For old plants over 5 years old, iron chelate fertilizer is applied to root cutting in autumn to improve the problem of yellow leaves.
By mastering the ecological habits and fertilizer requirements of peony flowers, combined with scientific cultivation and management, even novice flower lovers can cultivate high-quality peonies with beautiful plant types and flower diameters of more than 20cm. It is recommended to establish a maintenance log to record phenological periods and fertilization responses, and gradually form personalized cultivation plans. When the peony blooms, the layers of petals are not only a gift from nature, but also a crystallization of the wisdom of gardeners.