I. Reasons
1, improper temperature: it likes high temperature environment and has poor low temperature tolerance, so if it is not treated with temperature control in winter, it will be frostbitten and its leaves will turn yellow. In addition, it will turn yellow if the temperature is too high in summer.
2. Insufficient light: it likes light, and sufficient light can better promote photosynthesis and is conducive to the growth of branches and leaves. If placed in a dark place, the leaves will turn white and yellow.
3. Improper watering: Excessive watering or long-term water shortage during maintenance will lead to yellowing. Too much water can't be absorbed by the roots, which will rot the roots and turn the leaves yellow. Without water, the soil will harden, the roots will not absorb water, and the leaves will turn yellow.
Second, the treatment method.
1, timely temperature control: when the temperature is low in winter, it should be moved indoors in time, and the temperature between 16 and 18 degrees should be provided as much as possible, and the minimum temperature should not be lower than 5 degrees. When it is hot in summer, you should also move indoors and put it in the shade.
2, supplementary lighting: if it is caused by insufficient lighting, it is better to solve, as long as you move to a place with good lighting as soon as possible, so you can recover after a while.
3. Proper watering: When curing, it must be properly watered, without water shortage or water accumulation. Usually, it can be done in a dry and wet way. If the accumulated water is serious, move it to a well-ventilated place and let the water evaporate as soon as possible.