Generally speaking, there are four reasons. The first one is that the root is not good because it is planted too deep, so there are such symptoms
The second reason is that the pH of flower soil is too high. Because it likes weak acid flower soil, and if it uses flower soil with too high pH, it will definitely have problems
The third is because of the lack of Fe, which can help to form chlorophyll. Once lacking, the plant will not be able to photosynthetic normally, so as to produce this symptom.
Fourth, because the normal temperature is too low, there will be problems
The solution is to be phased. In the early stage, we need to solve the problem from three aspects. One is to use the special fertilizer for yellowing before its new branches grow out. The other is to use FeSO4 and spray it on the leaves. The third is to raise the temperature and give it suitable growth conditions.
There are some diseased plants because the soil is too alkaline, so there may be a short period of green after fertilization, but it will still turn yellow after half a year, and some plants because of too deep planting, root growth problems, in view of these two situations, we need to change the soil for it.
In the middle and later stage of the treatment, we still need to use the special fertilizer for yellowing, and increase the dosage moderately on the premise of ensuring that the root will not have problems. In addition, we can make some holes in its trunk and apply fertilizer to it. In about seven days, its leaves will turn green.
In addition, we also need to prune the branches so that the root vitality is not as good as before, so that its nutrition can be concentrated. If the yellowing is more severe, we can cut more, but it still depends on the number of leaves. If the leaves are too few, we still need to cut less, otherwise it will be bald.