What to Do When Kumquat Tree Leaves Turn Yellow? Cause Analysis and Solutions

1. Physiological leaf drop

If no wrong care measures were taken during cultivation, but the leaves still turn yellow, this is very likely natural leaf drop. The leaves that fall at this time are all in the middle and lower parts of the branches, and it is a natural phenomenon for old leaves to turn yellow; new leaves will grow next, so there is no need to worry too much.

Solution: Just pick off the yellowed leaves.

2. Unsuitable temperature

It can only grow better in a high-temperature environment, and the temperature is best kept at 22-28°C for the best growth. Once it drops below 8°C, its leaves will fall off.

Solution: If the outdoor temperature in winter is relatively low, it should be moved indoors, and attention should be paid to keeping it warm.

3. Improper watering

If there is too much water in the pot, its roots will be soaked in water and cannot breathe, the roots will rot, and then the leaves will turn yellow and fall off. If the weather is relatively dry, not only will old leaves turn yellow, but new leaves will also turn yellow.

Solution: Use loose, breathable soil with good drainage, and there should be no standing water in the pot on rainy days. If the surface of the soil turns a little white, then it can be watered, and each time it is watered it should be watered thoroughly, not just sprinkled with a little water. If the weather is very dry, water it more.

4. Too much pesticide or fertilizer

After it is diseased or infested with insects, if the dose sprayed on it is too high, its leaves will also turn yellow.

Solution: You can change the soil and replace it with a new pot to help reduce the medicine cover.

5. Lack of elements

If it lacks elements such as N, Mn, and B, its leaves will also turn yellow.

Solution: Apply targeted fertilizer according to the actual situation to help it grow healthily.