The leaves of the lemon tree turned yellow. If it is caused by the lack of certain nutrients or insufficient fertility, corresponding nutrients should be applied to ensure that fertilization conforms to good nutrition. If it is caused by insufficient light, it is necessary to keep enough sunshine during the growing period to meet the light demand. If there are many rotten roots, it is necessary to control the water and fertilizer and remove the rotten roots. If affected by pests and diseases, the branches and leaves with pests and diseases should be cut off and sprayed with drugs accordingly.

First, lack of nutrition.

Reason: If the lemon tree lacks some nutrients, it may cause the leaves to turn yellow. Long-term soil fertility deficiency and malnutrition can also lead to yellowing of leaves.

Treatment: Determine which nutrients the lemon tree lacks. If the veins are yellow, it is iron deficiency, and the mesophyll is yellow, but it is nitrogen deficiency, so nutrition can be applied accordingly. Fertilize the soil regularly to ensure good fertility. During the growth of lemon trees, Woye water-soluble fertilizer can be applied appropriately to supplement nutrients.

Second, there is not enough light.

Reason: When the lemon tree is growing and maintained, if the light is insufficient for a long time, it may lead to weak growth and yellow leaves.

Solution: Keep enough sunshine during the growing period to meet the light demand.

Third, root rot

Reason: If you water the lemon trees too much or accumulate too much fertilizer, it may lead to root rot and yellow leaves.

Solution: control the application of water and fertilizer. Once root rot is found, the lemon tree should be taken out of the flowerpot, cut off the rotten part, and then coated with bactericidal drugs.

Fourth, the impact of pests and diseases.

Reason: If the lemon tree is not properly maintained or the environment is uncomfortable, it may also be infected with pests and diseases, affecting the lemon tree and causing the leaves to turn yellow.

Solution: Take preventive measures in advance. Once pests and diseases appear, the branches and leaves with pests and diseases can be cut off and then sprayed.