Causes of Yellowing Lemon Foliage

Growing citruses at home has many nuances. So, lemons are poorly adapted to a temperate climate and require careful care even in the house. When the leaves of a lemon turn yellow, the culture shows discontent and requires the help of the host.

Causes of Yellowing Lemon Foliage

Causes of Yellowing Lemon Foliage

Sometimes small yellow spots appear on green leafy plates, which grow rapidly. Later, the damaged leaves dry and fall off. If such signs are observed only in some leaflets, this is a normal phenomenon associated with the seasonal renewal of the green mass of citrus. If most of the green mass suffers, the plant needs to be reanimated.

Lemon leaves turn yellow and fall for various reasons. Often this is a consequence of infection of the tree with diseases or attack of pests. The most common cause of such processes are errors in the care of the crop:

  • poor organization of watering;
  • violation of the temperature regime;
  • lack of light;
  • dry air in the room;
  • drafts.

Among the main reasons also highlight the lack of nutrients contained in the soil. Improper feeding leads to impaired growth of culture, decreased immunity and slow death of the lemon tree.

What to do with a houseplant

Treatment of cultivated citrus depends on the correctness of identifying the causes preceding the change in color and structure of leaf plates. The most common are errors in the content of the plant. It is important to review the features of irrigation, fertilizer, lighting and temperature conditions.

Diseases and pests are more difficult. There are many diseases in which citrus drops foliage, and each of them has its own treatment characteristics.

Treatment for diseases and pests

According to the description, most often yellowing of the foliage is a consequence of infection of citrus with gummosis and Molsecco's disease. At the first, it is difficult to take any measures due to the lack of a treatment regimen for the culture. You will have to get rid of citrus. With gummosis easier. Remove the affected parts of the plant and treat the lemon with copper sulfate.

Among pests, aphids and spider mites are dangerous. The fight against them is limited to the treatment with the insecticides Tanrek and Fitoverm.

Treatment for plant maintenance errors

Errors in care may cause the plant to dry out

When the leaves of an indoor lemon turn yellow and there are no signs of infection with diseases, the reason for the yellowing of the foliage is errors in the content of the plant at home. If small spots appear on the leaves, the reason is poor lighting. For room culture provide diffused light. The best place is the south or west window. It is shaded with a cloth or a window is glued with reflective foil.

If only the ends of the leaves turn yellow and dry, a possible cause is poor temperature conditions. Foliage may curl and fall.

Resuscitate the plant will work with the normalization of care at home. It is important to maintain a favorable air temperature of 19-22 ° C and avoid exposure to drafts: take the plant to another room for the duration of the ventilation of the room.

If all the leaves of a lemon turn yellow, a person makes mistakes in watering. It is important to organize favorable conditions, the creation of which is part of preventive measures:

  • Make a good drainage layer of expanded clay (at least 1/3 of the pot).
  • To clear drainage openings in capacity from soil and roots of culture.
  • Water only with settled water at room temperature.
  • Do not overdry the earth in a pot.
  • Do not overfill the culture to avoid rotting of the root system.

A sign of lack of moisture is the gradual yellowing and drying of the leaves. It dries at the edges, and after which dry spots spread throughout the leaf plate. To avoid the death of the culture, you will have to maintain a favorable level of humidity in the room (at least 60%). Daily spraying is important, as well as installing a container of water next to the pot. If a heating radiator is installed next to the lemon tree, it is covered with foil or cloth so that the air does not dry out.

Resuscitation of rotten roots

The consequence of yellowing and falling of leaves caused by poor organization of watering is often rotting of the roots.

Waterlogging of a lemon tree will inevitably lead to its death, therefore, it is important to revive the lemon in a timely manner.

It is important to inspect the roots of the lemon tree and remove any damaged parts. Culture is resuscitated as follows:

  • Carefully remove the lemon tree from the pot and shake the roots off the ground.
  • Inspect the root system for rot. All affected parts are removed with scissors or a blade, the sections are treated with charcoal.
  • The roots are dried for 15-20 minutes., Plant a tree in a new container.

After transplanting, the culture is watered. With proper organization of the lemon content, the tree will recover in 2-3 weeks.

Yellowed foliage after transplantation

Transplanting is part of the necessary process of maintaining the growth and development of the indoor tree. But the very change of soil for the plant is stress. Citrus fruits react negatively to any changes in nutrition and often show this with foliage conditions.

If the tips of the leaf blades are covered with yellow spots, which also spread between the veins, the tree does not have enough useful substances contained in the new soil. The tree needs to be fed with specialized mineral compositions for citrus fruits. If not, any mineral fertilizer containing iron, phosphorus, and potassium will do.

Preventative measures

Avoid yellowing and falling leaves will work with properly organized care at home. The owner of the citrus will need to control the level of temperature and humidity, timely and correctly water and fertilize the crop, and carry out preventive spraying from diseases and pests.

So that yellow spots do not appear on the foliage, a warm rain shower is arranged for the lemon. The plant is washed with a diffused stream for several minutes and set in its original place of detention.

Other preventative measures to help prevent yellowing of foliage:

  • Dose citrus with phytolamps in winter.
  • Protect wood from the harmful effects of heating appliances.
  • Open windows in the winter for several hours.


When a lemon suffers from yellowing of the foliage and discards it, it is important to identify the causes of this. Diseases and pests, as well as errors in the care of citrus, lead to such consequences. If there are errors in the content, it is necessary to normalize the care of the tree. The fight against diseases and pests requires the use of special drugs: insecticides and copper-containing compounds.


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