1、 Cause analysis

1. Excessive water supply times and quantity. Because of too much water supply, the new leaves turn yellow, but there is no obvious change in the old leaves

2. Water shortage. If there is too much water, there will inevitably be water shortage. If there is not enough water, the old leaves below will turn yellow, and the whole plant will turn yellow and die after a long time

3. Too much fertilizer. Too much fertilizer will make the surface of new leaves pitted and uneven

4. Lack of fertilizer. Untimely fertilization will make the plant lack nutrition, new leaves and tender stems will turn yellow, and the plant will die after a long time

5. The plant is iron deficient. Indoor planting will make the soil unstable, change at any time, and make the leaves shrivel and yellow in varying degrees

2、 Solution

1. Watering problem: watering shall be carried out on time, and the amount and times of watering shall be controlled to avoid the drying of plant leaves caused by excessive watering or plant water shortage

2. Fertilizer problem: topdressing should be carried out on time and in quantity, so as to avoid the yellowing of leaves caused by excessive one-time fertilizer causing plant development deformity or lack of nutrition caused by long-term non fertilization

3. Plant iron deficiency: this problem can be solved by pouring 7 parts of cake fertilizer and 5 parts of ferrous sulfate into a diluent with water on the plant

Conclusion: we should pay more attention to the maintenance, fully understand its habits and growth environment, not only maintain the water in the pot, but also give proper sunlight, and pay attention to ventilation and shielding the sun at high temperature. In addition, the plants should be pruned regularly to loosen and breathe the soil in the pot