How to raise banyan trees

There are many reasons why banyan leaves fall. (1) Humidity and moisture: Improper moisture does great harm to banyan trees. According to the feeling of hands on the basin soil, the principle of "seeing dry and seeing wet" is adopted. Don't water it often, be sure to water it thoroughly. Too much watering will lead to root rot and defoliation. Banyan trees in the north are difficult to maintain, so families should spray more water on the leaves to increase the humidity of the surrounding air. (2) Temperature: The suitable growth temperature of banyan trees should not be too high day and night, and (temperature difference 10 degree) is easy to shed leaves and die. Usually put it in a light-transmitting place, and pay attention to proper shading in summer. (3) Culture soil: loose humus soil with good water permeability is adopted, and the usual ratio is garden soil: humus soil: sand 2: 2: 1. It is best to place moss with the same size as the flowerpot above the bonsai, which is beautiful and plays a good role in drainage and ventilation. (4) Fertilizer: The growth of banyan trees likes fertilizer, but too many times of fertilization will be harmful to the growth of banyan trees. According to different seasons, the amount of fertilization will be different. It's winter now, so it's better to apply little or no chemical fertilizer. The main agent of the fertilizer is 0.2%-0.4% bean cake water. Or chemical fertilizers mainly containing nitrogen fertilizer. (5) Pests and diseases: The root system is damaged or decayed, and it is easy to shed leaves, but it is difficult to find because the root system grows in the soil. Root rot is very common because of long-term failure to change pots or improper fertilizer and water. It is best to check the roots, and trim the dead roots, weak roots and injured roots properly without damaging the roots. Soak it in a growth agent and plant it in a pot. In addition, the roots of banyan trees are prone to root rot or nodule disease caused by various bacteria and fungi, so proper attention should be paid to spraying drugs for prevention and control. The pests of banyan mainly include aphids, red spiders and mites. Spray 50% sulfinate wettable powder with omethoate 500 times solution or 1000 times solution. 0. 1%ag is also effective in washing powder water or essential oil water. (6) Pruning and maintenance: plants should be peeled and sprouted in the peak season, pruned once in autumn, and then not pruned, because plants grow slowly in winter and should not be pruned in winter. Pruning banyan trees should be carried out by special personnel. Pruning long branches, combined branches, weak branches and cross branches will make the whole tree feel layered.