When potted, the bottom of the basin can be covered with 3-5 cm thick coarse sand or pebbles to facilitate drainage. Potted soil should be a mixture of yellow sand and cake fertilizer, or a culture soil mixed with fully decomposed manure, garden soil and coarse sand at the ratio of1:1. Filling makes the roots stretch, not curl; After covering the soil, it should be compacted by hand, so that the roots are in close contact with the soil and easy to survive. After the pot is put on, water it once and put it in the shade to slow down the seedlings. After it is transferred to normal management, it can be placed in a sunny place to ensure sufficient sunshine. Always loosen the soil during the growing period and apply compound fertilizer every half a month or so. Peony in the new pot should not be fertilized, especially avoid applying thick fertilizer, otherwise the fleshy roots will rot and die. After half a year, you can gradually apply some thin fertilizer, such as decomposed chicken manure water or bean water, with a ratio of fertilizer to water of 20%-30%. The peony in the new pot may not bloom well in the first year, but it can bloom every year after 1-2 years. Peony blooms in the middle and late April of a year, and liquid fertilizer can be applied 1-2 times before flowering; Topdressing liquid fertilizer 1-2 times half a month after flowering; In dog days, sesame sauce residue (about 40-50g per pot) can be applied with 1 times dry fertilizer, which is beneficial to flower bud differentiation.
When the peony seeds mature in August, the fruit will crack, so it should be planted with the harvest. Before sowing, prepare soil, water and sow. After sowing, cover with fine sand, the thickness is 1-2 times the seed diameter, and keep the soil moist frequently. If necessary, cover it with a layer of corn stalk or rice straw to achieve the purpose of shading, ventilation and moisturizing. It can take root in the year of sowing in autumn, but it will not be unearthed until the next spring is warm. Seeded seedlings grow slowly, and well-developed seedlings take 3 to 4 years to blossom. Peony is usually planted to cultivate new varieties.
Cultivation management:
Peony should not be transplanted frequently after planting, otherwise it will damage the root system and affect the growth and flowering. In order to make peony grow well, fertilization should be reasonable every year. The first application was in the bud in March; The second application is when the buds appear in April; The third time is after flowering in late May; The fourth time, after the summer heat in late August, the plants are applied when they are pregnant with flower buds in the second year; The fifth time, 165438+ 10, furrowing around the plants to apply winter fertilizer. After each fertilization, water should be poured enough, and the soil should be loosened immediately to reduce water evaporation. Regular intertillage and weeding should be carried out in rainy season.
Potted peony, cut off withered branches and leaves after the first frost to prevent pests and diseases. You don't need to do indoor activities in winter, put it under a sunny balcony or eaves, and the soil in the basin should not be too dry.
Peony can be picked in time before flowering and after lateral buds appear, which can concentrate nutrition and promote the beauty of terminal buds. After the flowers wither, if you don't plan to sow and propagate, you should cut off the pedicels at any time to avoid fruiting and consuming nutrients.
Pest control:
The pests that harm peony are grubs, red spiders and aphids. In order to prevent grubs from biting peony roots, 50% phoxim diluent 1000 times solution can be used to irrigate the roots in early spring every year. Starscream and aphid can spray dimethoate. The main disease of peony is brown spot, the symptom of which is brown spot on peony leaves in summer, and leaves wither gradually after autumn, and even the whole plant dies. The prevention method is to spray Bordeaux mixture 1 2 times a month from April to autumn.