Many growers may be worried because they don't know why they turn yellow at all, so the medicine is not right, which is not good. Specifically, there are several reasons for this phenomenon.
The first is a lack of nutrients. Generally speaking, what plants lack is calcium or nitrogen.
The second is that plants are not watered properly. Too much or too little water will cause yellow leaves. However, the symptoms are slightly different, which can be seen through careful observation. If there is too much water, the tender leaves of plants will turn yellow and have no luster, but the older leaves will not be affected. However, if there is a lack of water, the old leaves will start to wither from the bottom to the top and fall off. On the contrary, the new leaves will not suffer. Therefore, if this is the case, we must distinguish between water shortage or water.
The third is caused by the lack of light. We all know that light is essential for the growth of a plant. For a long time in the shade environment, plants can't photosynthetic, so chlorophyll can't be synthesized. In the long run, how can the leaves of plants not turn yellow?
If it's the first reason, you need to supplement the plants with proper nutrients. We can use animal manure, cake fertilizer and so on to supplement nitrogen, calcium chloride to supplement calcium.
In view of the two aspects of the second reason, what we need is to water the plants scientifically and reasonably. The general principle is to make the pot soil slightly wet, but don't soak it in water.
If it's the last reason, it's simpler. It's better to take it out often to see the sunshine in sunny weather
