What is the reason why lemon leaves turn yellow and fall off?

Nowadays, many people like to grow lemon potted plants at home, because as a fruit tree, we usually see mature plants. But in fact, after about two years of growth and reaching a certain size, lemon seedlings can also bloom and bear fruit in pots. However, yellowing and falling leaves on lemon trees are also common problems. So what is the reason why lemon leaves turn yellow and fall off?

1. Supplement iron

Yellowing leaves on your lemon tree may be due to a lack of nutrients, especially iron. In this case, applying an iron-rich fertilizer can improve symptoms. Fertilization should be done gradually, and water should be applied appropriately after fertilization to help the fertilizer dissolve and be absorbed.

2. Prune and disinfect the roots

If your lemon tree has root rot, it can also cause the leaves to turn yellow. At this time, you need to clean and trim the rotten roots, then soak them in a solution of carbendazim for disinfection, then apply diluted copper oxychloride on the pruning wounds, and finally re-cover the soil to promote the recovery of the roots.

3. Shading measures

Strong summer sun may cause your lemon tree's leaves to turn yellow. In this case, the plant should be moved to a shaded location or kept in a low-light area indoors to avoid direct sunlight. Wait until the afternoon when the sunlight is weaker, and then let the plants receive scattered light, which will help the formation of chlorophyll and improve the yellowing leaves.

4. Adjust the temperature

Cold winter temperatures may also cause lemon tree leaves to turn yellow. At this time, the temperature of the maintenance environment should be maintained between 15℃ and 25℃. Maintaining a constant temperature will help the lemon tree resume growth and reduce yellow leaves. At the same time, pay attention to ventilation in winter and open the windows every two days to keep the air fresh and promote plant health.

The above is an introduction to the causes and countermeasures of yellowing leaves of lemons. You can observe the main reason for the yellowing leaves of your lemons, and then take countermeasures quickly.