Why do camellias lose leaves?

Why did the camellias lose their leaves? Please introduce the causes and control methods of camellia leaves are generally caused by basin soil is too dry or too wet, poor drainage, application of thick fertilizer or raw fertilizer, diseases and insect pests and so on. The defoliation after flowering may be caused by the drying of the potted soil. Because the plants after flowering have to shoot and sprout and enter the growth period, if the watering is insufficient or impermeable, it is easy to cause the leaves to fall off. Potted camellias should be planted in acid soil with loose, fertile and good drainage, and alkaline soil should be avoided. The size of the flowerpot should be in proportion to the seedlings. Daily maintenance should be placed in a moist and ventilated half-yin and half-sun place. You need more than 5 hours of light. The amount of water also varies with growth and season. You can keep it moist at ordinary times, and you can be slightly wet during the growing period. In hot summer, the basin soil is dry and wet, and it is irrigated once in the morning and evening. Never pour cold water in the hot sun. The camellias should be applied nitrogen-based fertilizer 1 to 2 times in time, about once a week, in order to promote the growth of branches and leaves. Phosphorus-based fertilizer was applied 1 to 2 times during bud rearing period, once every 10 days. Camellia is most vulnerable to shell insects and red spiders. This is due to excessive overlap of blades and poor ventilation. The preventive measure is to remove the overdense branches and leaves to make them ventilated and ventilated. The existing pests can be brushed off with a small toothbrush dipped in soap powder. Click to get more camellia planting techniques click to get more flowers and trees planting techniques