Why does the stem of a lemon turn dark? Why do lemon leaves turn yellow? Organizing proper lighting

Kira Stoletova

Home-grown lemons require quality care. If there are any errors in maintenance, the crop does not bloom, get sick or bear fruit. Often the lemon dries out and its leaves fall off. To keep your houseplant alive, it is important to identify the factors that precede such problems and take appropriate action.

Reasons for lemon drying out

Most of the reasons for yellowing and drying of leaves lemon tree lies in errors in caring for the crop being grown. When a small number of leaves dry on a plant, there is no need to worry: this is often a sign of seasonal rejuvenation of the plant's foliage, especially in mature trees.

If citrus sheds half of its leaf mass or more, it is worth reconsidering the features of keeping the crop at home.

Lemon leaves can dry out for the following reasons:

  • poor lighting (citrus suffers from excess or lack of sunlight);
  • insufficient watering or excess moisture in the soil;
  • sudden changes in temperature;
  • dry indoor air;
  • deficiency or excess useful substances contained in the soil.

Leaves fall off if the indoor tree is infected with diseases or suffers from pests. The sooner the signs of damage and the factors preceding it are identified, the faster and more successful the treatment will be. It will not be possible to revive the plant unless the lemon has completely dried out.

How to save a lemon tree

The chances of saving a home-grown crop are greater if signs of leaf drying are detected in a timely manner. When a lemon just begins to dry, it still resists the effects of harmful factors - it can be revived faster.

All measures for improving the health of indoor citrus are and preventive methods, because treatment and prevention of damage to leaf blades is carried out using similar actions. The only exception is infection of the plant by fungal and viral diseases, as well as attack by pests.

Citrus can be cured of diseases at home by using copper-containing compounds.

It is impossible to fight Molsecco disease. From such a pathology effective means and there are no treatment methods yet.

Organizing proper lighting

Lemon - tropical plant. He loves moisture and Sun rays. The light should be diffused, typical of dense thickets of tropical jungle. Direct sunlight leaves burns on the leaf plates, which is why their surface begins to transform, becoming dry and rough.

To save your indoor tree, you will have to take several important measures. The owner of the citrus tree needs:

  • Organize 12 hours of daylight. Additional illumination is carried out with phytolamps.
  • Place the container on south, southeast or southwest windows.
  • Protect the leaf mass from direct sunlight with a cloth or special reflective foil pads (they are attached to window glass).

All sun-damaged foliage will have to be removed. Dried leaves cannot be restored. It is easier to make room for the germination of young green mass.

Correcting errors in irrigation organization

Lemons love moisture and react poorly to its lack or excess. The plant is watered with small portions of warm water, avoiding the accumulation of excess liquid in the pan. Focus on the condition of the soil in the pot. Citrus is watered as soon as the earthen ball becomes dry.

When overwatering occurs, the roots of the crop suffer. They rot and gradually die, depriving the tree nutrients. As a result, the structure and color of the foliage changes, it dries and falls off. When these signs occur, they act decisively:

  • remove citrus from the pot;
  • carefully remove the earthen lump and rinse the roots with running water warm water;
  • examine root system for the presence of damaged tissue (all rotten processes are removed);
  • treat the cut areas with charcoal or other antiseptics.

After these manipulations, the citrus roots are dried for up to 30 minutes, and the lemon is planted in a new substrate with a good drainage system (up to 1/3 of the total volume of the pot).

Temperature normalization

During sudden cold snaps and frostbite, a lemon tree can quickly lose its leaves. Even an ordinary draft can have a detrimental effect on culture.

When exposed critical temperatures stabilize the indoor microclimate. The favorable temperature for keeping citrus fruits is 18-22°C. With careful care, the tree will quickly grow and develop new healthy foliage.

Air humidification

If citrus foliage begins to dry out along the edges and curl, it suffers from dry air. The normal humidity level for this crop is 60-70%. If there are any deviations, she gets sick.

Refreshing a flower in a pot will not be difficult. The following measures are beneficial:

  • Regular spraying of the foliage and tree trunk with warm water, as well as daily wiping of the foliage.
  • Cover with thick cloth or foil heating devices: they contribute to drying of the air near adjacent windows.
  • Installing water vessels next to the tree.

The roots of the plant are protected from exposure to dry air by spreading sphagnum moss or a piece of wet fabric near the tree trunk.

Pest Control

There are a number of diseases and pests that cause citrus to shed its foliage.

Most often, the tips of the leaves of indoor lemons dry out due to spider mites. Characteristic sign infection - drying of not only the leaves, but also the branches of the plant. There are thin cobwebs and small black dots on the leaf blades. To prevent the indoor tree from completely drying out due to the harmful effects of the mite, get rid of it. There are several effective options treatment:

  • treatment of deciduous mass with an aqueous solution of laundry soap;
  • illumination with an ultraviolet lamp;
  • use of insecticides.

Scale insects are also dangerous for lemon trees. When it attacks, small growths appear on the leaves, which quickly grow, destroying the leaf blade. As a result, the lemon leaves dry out and fall off. Scale insects are combated with soapy water and insecticides.

Conclusion

If the tips of the leaves of a lemon dry out, the reason should be sought in the lack of care for the indoor tree. It will be possible to revive the plant only by normalizing its contents: by properly organizing watering, air temperature and humidity, applying fertilizers, etc. If the lemon is actively shedding its leaves, check the condition of the roots and the presence of signs of infection by diseases and pests.

Indoor lemons are small trees that are popular among home plant lovers. It is quite possible to grow edible fruits on them; the decorative properties of the plant are also excellent. In addition, the lemon tree, due to its emissions into the air, essential oils exudes a pleasant citrus aroma. However, lemons require careful care, otherwise the tree may stop producing fruit or die altogether.

Why can lemon leaves turn black?

If you notice black and dark brown spots on the leaves of a lemon, this is a direct indication that the care of the tree is not organized correctly. Blackness appears for several reasons:

  1. Mistakes when watering plants. Lemons usually react by turning black leaves when overwatered. Another option is if you water the lemon in sufficient quantities, but always in one place, for example, under the root, that is, the moisture is not distributed throughout the earthen coma, because of this the roots may begin to rot.
  2. Dry indoor air. Lemon needs normal or high humidity. It does not tolerate dryness well, so it is recommended to spray the tree regularly.
  3. Bad substrate. Ideal soil To grow indoor lemon, use a mixture of soil and sand with a small amount of clay. It is necessary to organize drainage at the bottom, which will help avoid waterlogging of the soil.

If you find blackening of the leaves, be sure to analyze these components of caring for it.

How to properly care for lemons to avoid blackness on the leaves?

The first step is to organize proper watering for the plant. Lemon prefers moderate soil moisture. Chlorine is contraindicated in citrus fruits, so the water must be passed through a filter, boiled, or left in an open jar for at least a day. In winter, watering should be reduced to a minimum, and the water should be heated to room temperature.

For a lemon, its location is also important. In summer it must be placed on a windowsill facing south. Lemon needs as much light as possible in the summer. Ideally, keep it outdoors, for example, on a balcony. In winter, the tree also needs light, but the air temperature in the room should not exceed 18°C. If you place a lemon on a windowsill in winter, insulate the pot, especially on the window side.

The air in the room must be humidified. Even if there is a humidifier in the room, the lemon must be constantly sprayed. Wood also loves to be rinsed in the shower. Another option for creating increased humidity is to place the pot in a shallow tray filled with water. In this case, the drainage holes in the pot should be closed to prevent moisture from entering the soil.

Lemon also needs feeding. In summer, alternately apply mineral and organic fertilizers so that the plant receives the necessary nutrients. In winter, it is enough to spray the tree with a weak solution of potassium permanganate once a month.

Lemon – exotic plant from the citrus family, which has long gained popularity not only as a healthy and healing fruit, but also as a houseplant. True, it is not easy to grow it in an ordinary city apartment, but especially persistent flower growers create ideal conditions for lemon, and it thanks them for its beautiful and well-groomed appearance, as well as numerous fruits.

Buy young plant You can buy it in any specialized store, but it is not particularly popular, since lemon is not cheap, and caring for it is difficult. Many people do not dare to grow it, for fear of not being able to cope and destroying the capricious tropical plant. After all, attention and care alone are not enough. An indoor lemon will require special conditions that will be close to its natural ones. natural conditions. It is easily susceptible to disease and can suffer from various pests.

The most common and widespread problem is negative manifestations on the leaf part of the plant. Lemon leaves suddenly begin to turn yellow and wither, and later fall off en masse. In order to avoid such troubles, it is necessary to know the main causes of these phenomena. There are many factors that cause these complications with indoor lemon.

Lack of lighting

Bright sunlight and long daylight hours in countries such as India and China, which are considered the most popular and favorable places for growing lemon, is one of important factors full development of a tropical plant. At home, you will have to make a lot of effort to create appropriate lighting throughout the year. After all, lack of light and yellowing of leaves are directly related.

You can make up for the lack of light in the fresh air (for example, on a balcony, loggia or terrace). You can change the place where lemon is grown only if there is an optimal night air temperature, which will not fall below twelve degrees Celsius and there is a guaranteed absence of night frosts.

In a room for a representative of citrus fruits, you need to choose a window sill on the south side of the apartment, and in addition to this, use a mirror or foil as a reflective device, which will significantly increase the flow natural light. Great solution There will also be the use of fluorescent lamps as additional lighting.

Improper watering

An excess or lack of irrigation water leads to a disease of the root system of the plant, which begins to intensively fight for life and spend all its energy on restoring the roots, but for the above-ground part there are no longer enough resources, and therefore problems with the leaves begin. If the lack of water during irrigation can still be adjusted and the soil moistened in time flower pot, then overwatering will lead to the death of the plant due to the appearance of rot.

The ideal soil condition is constant moderate moisture.

Unsuitable temperature

Yellowing and wilting of foliage is often a consequence of stress suffered by the plant. Stress for lemon is sudden changes in temperature, cold drafts and low air temperature in the room.

A representative of citrus fruits can fully develop at temperatures from 14 to 27 degrees Celsius. Ideal conditions– these are minor temperature fluctuations within these limits. Ventilation during the cold season should be carried out with extreme caution. Cold air flows should pass above the crown of the indoor plant (this also applies to the use of a fan or air conditioner). IN heating season Heating devices (including a fireplace) that are located very close to the plant pose no less of a danger to lemons.

Low humidity level

You can maintain the level of humidity required for lemon (about 70%) using water procedures in the morning and evening hours every day at any time of the year. For spraying the crown, it is recommended to use soft, settled water. You can also connect household humidifiers, a mini fountain and a steam generator to solve this issue.

Lack of nutrients and microelements

Adequate nutrition is an important component of the growth and development of lemon in room conditions. With a lack of certain microelements and nutrients, the plant changes the color of its leaves and even sheds them. For example, light yellow small spots on leaves appear when there is a lack of nitrogen. Drying of the leaves around the edges indicates the plant's need for phosphorus. And the lightening of the green color of the leaf mass signals a lack of iron.

Gardeners recommend promptly and regularly applying special complex fertilizers for plants from the citrus family in the exact dosage that is suggested in the instructions. It is very important not to exceed the norms of applied fertilizers, because they are absorbed by the plant, which means that an excess of microelements along with the fruits can be consumed and harm the work of various internal organs person.

The appearance of pests

You can fight harmful insects that feed on the juice of lemon leaves and stems only with the help of chemical solutions and various preparations for spraying citrus crops.

  • Spider mites can be destroyed by the drug Actellik.
  • The scale insect is afraid of spraying with Fitoverm.
  • You can get rid of aphids by using Tanrek.
  • “Neoron”, “Aktara”, “Fufanon” work well against whiteflies and scale insects.

Dangerous diseases

Infectious, viral and fungal diseases that affect the color and condition of the leaf part of the lemon, unfortunately, cannot be cured. In most cases, a plant affected by a fungus must be destroyed, since it cannot be saved, and other indoor flowers can be infected very easily. Among the numerous diseases of lemon, the most common ones can be identified.

Scabfungal disease scab or wartiness appears on all parts of the plant - stems, leaves and fruits. First, yellowish spots appear on the leaf part small size, which through a short time become dark gray warts. Turning into large growths on the stems, warts gradually destroy the plant.

In the early stages of the disease, you can try to save the lemon. All affected shoots and stems must be pruned, and the remaining healthy parts must be sprayed with Bordeaux mixture.

Malsecco– this disease is also caused by a fungus and its onset can be determined by specific signs. Yellowish veins against the background of bright green leaves are evidence of the appearance of a disease. A little time will pass and the leaves will begin to wither and curl, which will subsequently fall off and the stems will gradually dry out. It is useless to fight this fungus; the plant cannot be cured.

Brown spot– this fungal disease has another name – phyllostictosis. The fungus most often affects the leaves located in the lower part of the plant. The appearance of the disease is noticeable by light brown spots on the leaves and a darker colored border.

At the initial stage of the disease, the citrus crown can be treated with special fungicidal preparations, which are recommended for the destruction of certain types of fungus are “Strobi”, “Vectra” or “Abiga-Peak”.

Oil spotting– this incurable fungal disease can destroy indoor lemon within 3-6 months. Unfortunately, it does not matter at what stage the disease is detected. The green leaf mass is first covered with chaotic light yellow spots, then they become almost orange, then dark brown and black. The surface of the affected leaves appears oily.

When the first signs of the disease are detected, it is recommended to immediately isolate the lemon from other plants, or even better, immediately destroy it, since there is a high probability of infecting other pets.

Late blight– common for many indoor plants Late blight disease begins to affect the lemon from the root collar. Its signs become noticeable over time on leaves and stems. The main signs of the disease are dark, watery spots on the bark that, through certain time crack, and a light-colored liquid with a yellowish tint is released from the cracks. Leaf blades become covered with oily spots.

Urgent measures are to clean the damaged areas of the bark and treat the entire plant with Bordeaux mixture.

Tristeza- this disease is caused by a virus that is quite widely known among European gardeners, as it prefers to infect various representatives of citrus fruits. Cure the plant from this viral disease impossible.

The disease has three stages of development. In the first stage, the leaves acquire a yellow or bronze tint. On the second, the color of the leaves becomes rich yellow. And the final stage is a massive fall of foliage, death of the root part and the entire plant.

Natural factors

Sometimes one yellowed leaf appears on a lemon bush at the very bottom of the crown, but the plant remains in its usual state and does not change its external characteristics for a long time. In this case, there is no reason to worry - it’s just an old leaf that has turned yellow, which will soon fall off, and a young new leaf will take its place.

Care and mistakes when growing lemons (video)

Many gardeners have long learned to grow lemons at home, combining business with pleasure. A grafted lemon tree not only produces juicy and aromatic fruits, but is also a real decoration for any room.

These tropical plants perfectly purify and disinfect the air, which is an additional benefit. True, caring for a lemon tree is not at all easy, and the main problem, awaiting flora lovers, is the periodic yellowing and falling of the leaves of the plant.

1. Acclimatization period.

If the leaves of a newly acquired plant turn yellow and fall off, this is a lemon going through a period of acclimatization.

2. Another common reason for the yellowing of lemon leaves is excess or lack of light. Although this plant is tropical, it loves shade during the hottest hours. Suitable: southwest windows in summer, and east windows in winter.

Direct sunlight will depress the plant, and it will respond to this by the appearance of small, pale foliage. The lemon will try to reduce the leaf area to absorb less light. If you then move the lemon into the shade, it will shed these leaves. Lemons need moderate shade to promote the growth of healthy, rich, dark green leaves.
Gradually accustom the plant to brighter lighting.

3. Dry air.

Lemon trees love high air humidity. If the room is too hot and dry, then the tips of the lemon leaves will very soon begin to turn yellow and dry out.
Plants that naturally grow in regions with high humidity may have problems in dry conditions. Overwatering in this case will only worsen the situation, as it can cause rotting of the root system, which will lead to less water reaching the leaves.

In case dry air is caused climatic conditions or heating in the autumn-winter period, use a humidifier. Spraying plants with a spray bottle is not effective unless you do it every 10 minutes.

Another solution is gravel if you put it in the tray of a pot and water it. In this case, the bottom of the pot should not reach water so that the roots do not rot. Instead of gravel, you can use expanded clay. The water from the pan will evaporate, increasing the humidity in the room.

The location of the plant also plays an important role. If you place plants together in one or more groups, it will be easier for them to combat the evaporation of moisture from the leaves. Also place the plants as far as possible from heat sources: fans, radiators. Also try to keep your plants in the bathroom and kitchen, as these rooms have the highest humidity.

4. If lemon leaves begin to turn yellow not at the tips, but at the base, and then fall off, then this indicates a bad drainage system. Moisture accumulating in the soil has a very adverse effect on the lemon root system, which begins to rot. In this case, measures to save the plant should be taken immediately, and they should be drastic.
The lemon must be transplanted into a new flowerpot as soon as possible, which should be filled at least one third with pebbles or expanded clay. Before transplanting, the roots of the flower should be carefully examined and, using scissors, those parts that have undergone the rotting process should be removed, dried and sprinkled with charcoal. Only after this can the flower be planted in new soil.

5. If you are faced with the fact that the leaves of a lemon turn yellow at the edges and curl, then this indicates sudden temperature changes in the room, which this tropical plant can hardly tolerate. Drafts can also cause such problems, so under no circumstances should a flowerpot with lemon be placed near a window or door. The place for the lemon should be selected in such a way that it is light and, at the same time, slightly shaded, and also reliably protected from air flow.

6. Don't correct transplant, too much big pot and incorrectly selected soil.

Prepare the substrate for lemon yourself by mixing 2 parts of turf soil and one leaf soil, river sand and humus. Can be used ready soil for citrus fruits. When replanting a plant, keep it at the same level, that is, do not deepen or leave open the part of the trunk that was previously hidden by the ground. Therefore, the lemon pot should not be deep, but rather wide. When replanting, do not use large pots - this can lead to acidification of the soil.

7. Proper wintering.

Lemon can shed its leaves in winter, when there is no excess light. This occurs due to the difference in temperature in the soil and in the atmosphere. When the ground is cold, the roots of the plant work worse, absorbing water, and at the same time the foliage is warm and intensively evaporates moisture and eventually falls off due to its lack. Therefore the lemon in winter time it must be protected from the flow of cold air that goes through the window slots directly into the pot.
If all maintenance conditions are met, and the leaves still fall off in winter, then the plant must be sent to winter in shady place with a temperature of plus 6-7 degrees.

8. Proper watering.

In winter, watering should be done no more than three times a week (it all depends on the humidity and temperature in the room). If the room is cold enough, then watering the lemon more than twice a month is not recommended. The fact is that during the cold season, excess water is not used anywhere, and moreover, it is poorly absorbed into the soil. This leads to rotting of the roots and yellowing of the leaves.

In summer, it is better to over-moisten lemons (especially those standing outside) than to leave them without moisture or give it in insufficient quantities. However, even in hot weather, do not forget to dry the soil a couple of times a month, stopping soil moisture during this period. Despite the high air temperature in summer, do not water the plant under any circumstances. cold water and in daytime. The water should be at room temperature so as not to harm the roots of the plant. The most acceptable time for watering is early morning or late evening.

9. Fertilizers.

The lack of certain substances can be noticed with the naked eye:

A lack of phosphorus results in leaves losing color, turning pale, and falling off. The fruits become deformed and become almost ugly. In addition, they become coarser (meaning that the peel thickens and becomes bitter);

Nitrogen deficiency causes leaves to develop poorly and turn yellow, especially on branches that bear fruit. The lemons themselves grow small and tasteless;

The development of chlorosis in the leaves (pallor and then yellowing) causes an insufficient amount of iron in the soil. This also leads to drying out of the top of the plant and dropping of the fruit;

Calcium is also an important element, because its absence or insufficient quantity leads to weakening of the plant, to the appearance of spots on the upper ends of the leaves and their eventual falling off.

Timely application of fertilizers containing these, as well as other significant chemical elements(such as copper, zinc, magnesium, boron) will prevent wilting and yellowing of the leaves on the lemon, and its fruits will remain large, juicy and tasty.

Lemon requires mineral and organic fertilizers. Feeding is carried out from January to September every week.

10. Pests.

There are many pests that attack plants. If the plant is infested with pests, the tips of the leaves may turn brown.

If pests are detected, treat the plant promptly to avoid their further spread.

11. Change of temperature regime.

If your plant has been standing outside all summer, and with the onset of cold weather you suddenly bring it indoors. warm room be prepared for the plant to react to this by yellowing the leaves.
To avoid a sudden change in temperature, it is better to bring the plants home before the onset of cold weather, or immediately place the plant in a cool wintering place (cold window sill).

12. Flowering.

In order for your lemon to bring you a harvest, you must first achieve flowering. Therefore, if a young and weak plant has bloomed (which has less than 50 leaves), then the flowers can be removed so that it gains strength.

Growing lemon at home is a good practice. An indoor lemon tree not only produces tasty, aromatic and healthy fruits, but also creates a colorful decoration in any room. Moreover, the tropical fruit has the property of purifying and disinfecting the air. Caring for a lemon tree is quite difficult and requires effort. Most common problem A problem that experienced gardeners encounter is the periodic yellowing and falling of leaves of the plant. There are plenty of diseases that affect citrus fruits, including lemon, but why lemon leaves fall and what to do about it worries many gardeners.

Care errors as causes of yellowing leaves on lemons

There are several diseases of this ornamental plant:

  • Diseases resulting from poor care.
  • Plant disease due to lack of nutrition.
  • Diseases caused by existing pests.

The reason why lemon leaves turn yellow is due to poor plant care:

  • Watering with cold water.
  • Poor lighting and heat air leads to depletion indoor tree, as well as yellowing of the tips of the leaves.
  • Excess moisture in the soil.
  • Changing the acid-base balance of the soil.

Acclimatization to new conditions

If yellowing of the leaves occurs in a newly acquired plant, then this is a normal phenomenon. Lemon is going through an acclimatization period. But, if the plant does not stop shedding leaves within several weeks, then this indicates that this type not intended for growing indoors. Most likely, a plant that should grow on open ground.

Excessive lighting

Excess light can also cause lemon leaves to turn yellow and fall off. Despite the fact that this plant is a tropical species, it loves shade. Therefore, placing it on a windowsill on the south or west side would be a big mistake. Such individuals can get sunburn.

In principle, a lemon that has received sunburn can cope with this disease on its own if you react quickly and place the indoor tree in a shaded place.

Otherwise, the plant will instantly shed its yellowed foliage and, as a result, simply die.

Lack and excess moisture

Lemon refers to moisture-loving plants. It requires both regular watering and frequent spraying. Therefore, if the air in the room is dry and hot, the tips of the leaves of the plant dry out, and then turn yellow and fall off. Regular air humidification is very important for indoor trees. Experienced gardeners It is recommended to place any container with water near the pot with the plant.

Yellowing of the leaves at the very base is indicated by poor drainage provided when planting the plant. The accumulation of moisture in the soil leads to rotting of the lemon root system. Here you need to react quickly and transplant the plant into a new pot, which should be filled with drainage to at least a third of its volume. For drainage, you can use expanded clay or pebbles. Roots that have rotted should be removed before replanting. After this, the root system is treated with a light solution of potassium permanganate to destroy putrefactive bacteria. And only then can the lemon be planted in the ground.

Drafts and air humidity

Drafts have a very detrimental effect on the plant. As a result of air currents in the room, the leaves of the lemon turn yellow and curl, and then dry out and fall off. Any sudden temperature changes are contraindicated for him.

The flowerpot with lemon should be in a well-lit and shaded place, which will be protected from drafts. During the heating season, it is recommended to place the plant away from radiators and radiators, as this can also lead to yellowing and falling leaves.

Lack of nutrition

Lack of nutrition, that is, fertilizer, also leads to the fact that the lemon's green leaves turn yellow, fall off and dry out.

For example, speckled spots yellow color on the leaves indicate a lack of nitrogen. As a result, the green leaves turn yellow. If the ends of the leaves dry out and turn rusty brown, this indicates a lack of phosphorus. A lack of potassium is indicated by folds and grooves appearing on the leaves between the veins. A lack of iron is indicated by a contrasting network of green veins on light-colored leaves. Falling ovaries indicate that the lemon lacks boron and manganese. It should also be remembered that an excess of nutritional components has a bad effect on the plant and leads to the death of leaves.

Lemon diseases

There are three types of lemon diseases:

  • Infectious.
  • Fungal.
  • Viral diseases that cannot be cured.

Basically, such diseases appear on plants grown on plantations in open ground. Lemon that grows indoors is less sensitive to them. To do this, it is worth buying cuttings of indoor varieties. But there are cases that infectious diseases Indoor plants are also affected.

Lemon can be affected by external and internal fungal diseases. To combat the former, you just need to remove the pests from the surface of the leaves.

Such representatives include Sooty Fungus. It is necessary to spray the lemon tree copper sulfate or Bordeaux mixture - they help get rid of internal fungal diseases, you can also use fungicides for this.

Citrus pests

Why do lemon leaves turn yellow? Perhaps because various pests have appeared: spider mite, scale insects, mealybugs, etc. To combat them, spraying with special insectoacaricides will be effective.

For detailed information about why lemon leaves fall, you can watch the video.

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