Homemade lemon, like any other citrus crop, is susceptible to many diseases. These can be infectious, viral, fungal diseases, as well as diseases resulting from improper plant care.
Diseases of indoor lemon often occur due to a lack of trace elements. For example, if citrus is deficient in nitrogen, small, light yellow spots appear on its leaves. With a lack of phosphorus, the leaf plate grows dull, and its edges dry out. If the tree does not have enough iron, a light green mesh appears on its leaves; if there is a lack of manganese or boron, the ovaries fall off. To prevent this, you should regularly apply mineral and organic fertilizers. In this case, it is important to observe the dosage, since an excess of fertilizers also negatively affects the condition of this plant.
Diseases of lemon at home and their photos
Diseases of lemon at home can be caused by pathogenic microorganisms: fungi, viruses, bacteria, mycoplasmas. In the affected individuals, various defects appear (shrinkage, deformation of fruits and leaves, spotting, growths, and others). Pathogens are spread by wind, insects, and water droplets during watering and spraying.
Most often, weakened trees are susceptible to diseases, therefore it is important when growing a lemon to create all the necessary conditions for its full development, to carry out proper care, and conduct regular, thorough examinations. The fight against lemon diseases should be carried out when the first signs appear. From a diseased individual, it is required to cut off all affected parts so that they do not weaken the tree.
The most dangerous diseases of homemade lemons:
Photo gallery
For the prevention and elimination of pathogens of fungal and bacterial diseases, the biofungicide "Fitosporin" is recommended, which is watered and sprayed with citrus.
Gommoz
This disease occurs in the lower part of the trunk. Gradually rises up to the branches and down to the roots of the tree. In places of damage, bulges are formed in which gum accumulates, which is a yellow or brown liquid that hardens in air. The affected areas crack and die. Wounds appear on the tree. With a strong lesion of the lemon, the leaves dry up and fall off. Individuals infected with gommosis continue to produce crops, but their fruits become smaller and lose their taste. If you do not take measures to eliminate this disease, the citrus will die.
Gommosis often affects leaves and fruits. Brown spots appear on the leaves, which grow over time. On affected fruits, the skin darkens and coarsens. The pulp softens, rots and takes on an unpleasant odor.
It is quite difficult to treat this disease. Sick areas are cleaned and treated with a solution of copper sulfate. After that, the tree is removed from the soil, its roots are cleaned and transplanted into fresh soil. Diseased bark and wood are cut out, all cleanings are burned.
Scab and other diseases of lemon leaves
Lemon can also infect scab, which can be recognized by convex spots that appear on the leaves, branches, citrus fruits. After a while, instead of these spots, holes form, after which the leaves fall off, the fruits and bark of the branches crack. The causative agent of scab is a pathogenic fungus that can overwinter in fallen leaves, spread by wind and insects. Grows quickly in humid environments.
To prevent this disease in the spring, the crown and soil should be sprayed with a solution of copper or iron sulfate. The diseased plant is sprayed with Bordeaux liquid after bud break. Secondary spraying is carried out after flowering. To do this, you can use copper oxychloride, cuprozan and other fungicides.
The affected lemon parts must be collected and burned. Change the soil. In the spring, before the swelling of the kidneys, all diseased branches are removed. The tree is sprayed with mineral fertilizers. For this, urea (10%), ammonium nitrate (10%), nitroammofoska (10%), calcium chloride (70%) are used. The drug "Strobilin" is effective in the fight against scab.
Sooty fungus
It appears on the leaves, later on the branches and trunk in the form of a dark bloom. This disease slows down the growth of the plant, interferes with its normal development.
When signs of soot fungus appear, the plaque is washed off with clean warm water. It is helpful to rinse the wood under the shower. The room where the affected lemon is located must be well ventilated.
Wart
Wart is one of the diseases of lemons that occurs in indoor conditions. Young shoots, fruits and leaves are attacked by a pathogenic fungus.
Small yellowish spots appear on the leaves, which after a while turn into gray warts. On the shoots, the warts increase in size, forming large growths, which leads to the death of the shoot. Brown spots form on the fruit, the ovaries fall off. Wart develops rapidly in extreme heat and high humidity.
To eliminate this disease, the affected parts of the plant are cut off and burned, then the crown is sprayed with Bordeaux liquid. The first spraying is carried out in March, the second immediately after flowering, and the third in July.
Root rot on lemon
Root rot on lemon is not noticeable until intensive leaf fall begins. When this sign appears, the tree is dug up and the root system is examined. If there are lesions, they are removed with a sharp knife. After that, the citrus is transplanted into fresh soil and placed in a bright place. The next few days do not water. Wipe the leaves with a damp cloth.
Sometimes, when root rot appears, dark brown spots appear on the trunk, through which dirt seeps. Over time, the bark dries up and dies off.
Photos of the above diseases of indoor lemon can be seen below:
Photo gallery
Lemon viral diseases
Homemade lemon diseases such as citrus cancer, leaf mosaic and tristeza are viral.
Citrus cancers appear as dark brown spots on the leaves and fruits. With prolonged illness, the leaves fall off, the fruits are formed with defects. This disease leads to the death of the plant. It is not subject to treatment.
For the prevention of citrus cancer, the tree is treated with a liquid copper fungicide in spring.
Leaf mosaic is recognized by light, sometimes dark green stripes or streaks on the leaves. It leads to deformation of the leaf plate, as well as to a slowdown in tree growth. It is not subject to treatment. With good care and regular feeding, it becomes less pronounced.
Tristeza - leads to drying out and leaf fall. With a strong defeat, branches, bark and whole trees die off. It is not subject to treatment.
Lemon disease - sticky leaves
Quite often, citrus owners are faced with deformation, drying and falling of its leaves.
Lemon leaf diseases occur for a variety of reasons. It can be a lack of nutrients, poor care, pest damage, tree disease.
The reason for leaf fall is often a lack of light, dry air or too high an air temperature. Watering with cold and chlorinated water, excess moisture in the soil, disturbance of the acid-base balance of the soil negatively affects the leaves and the plant as a whole. In addition, lemon leaves react sharply to any changes, whether it be rearranging it to a new place or changing the temperature regime.
In some cases, citrus leaves become sticky. The sticky lemon leaves look like they've been sprinkled with syrup. Such a disease, as a rule, is caused by a tree settling. If measures to combat this pest are not taken in a timely manner, soot fungus can develop in the sticky liquid. To eliminate sticky plaque, the leaves are wiped with a solution of transformer oil (6 ml per 1 liter of water). After 5-7 days, re-treatment is carried out. The solution not only effectively removes sticky plaque, but also destroys a young scale insect that has not yet been covered with a protective shell. If the treatment is not carried out, the plant will die.
You can use another way to heal the tree. In the warm season, citrus is sprayed with karbofos or tobacco solution. To completely eliminate the disease, 2-3 such treatments are required with an interval of 7-10 days.
The characteristic signs of lemon diseases are presented in the following photos:
Fungal disease, development is favored by heavy and constantly moist soil. The disease affects the roots and bark of root necks, the bark becomes loose and dies off.
With the annular girth of the root necks with rot, the plant dies.
Treatment:Dried and affected shoots should be cut, healthy branches should be shortened by 2/3. Clean, disinfect and cover the wounds on the root collar. Smear a clod of earth under running water, examine the root system and cut off any darkened roots. Then you need to transplant the plant into fresh soil, improve its aeration, reducing watering to a minimum.
Metabolic disorders in the plant body. Ripe, active leaves lose chlorophyll, changing their usual green color to yellow.
Young leaves develop, have an unnatural yellow color and often crumble without ripening. The formation of chlorophyll is prevented by dehydration of plant tissues. With a strong lack of moisture, the destruction of chlorophyll occurs, premature yellowing of the leaves, which happens with prolonged drought or poor aeration of the soil. The spread of the disease is facilitated by the heating of waterlogged soil in the summer to 40 50 C.
A citrus fungal disease that damages all parts of the plant. On the affected areas of the root collar, trunk, branches, deep, longitudinal cracks appear from which an amber gum is released. As it dries, it becomes glassy, \u200b\u200bwhen moisture gets in, it becomes gelatinous and washed off.
The disease progresses in areas unprotected by bark, through which moisture gets on the wood for a long time.
In the picture, the lemon branches are affected by melanosis, the cut points of the branches served as contact of moisture with wood. The gum was washed off from the affected areas by rains, the arrow shows the gum that was not washed off.
Young vegetative leaves are deformed, their tissues grow unevenly. Bulging dark green, coarse gum-filled, irregular spots appear on the leaves. 
Lemon leaf affected by melanosis. On a light green with yellow background, dark green spots are clearly visible.
The disease is promoted by prolonged precipitation with a decrease in air temperature below + 20β°Π‘. Constantly moist and poorly drained soils.
The fruits lose their presentation, in places of their contact with moisture a gray, rough bloom appears.
It is clearly visible on green lemon fruits. 
On ripe fruits, plaque is practically invisible, the disease does not affect the taste of the fruit.
The surface of green fruits damaged by melanosis is covered with a gray bloom.
Treatment:ensure good drainage and aeration of the soil, limit the ingress of moisture on the leaves and crown of plants at an ambient temperature below 20β°Π‘. Remove dried, heavily affected shoots and branches. If the lesions are not large, cut out to healthy wood, the wounds should be treated with a fungicide.
Fungal disease affecting the lower part of citrus trunks. Longitudinal cracks appear on the bark, from which gum is released. The bark on the affected areas does not soften. The disease progresses at temperatures above + 30C, excess moisture and poor aeration of the soil, deep planting of the plant and often excess nitrogen fertilizers contribute to the development.
The root collar of the lemon is partially affected by gommosis. The main part of it is healthy, the plant can be cured. The cause of the disease was the deep planting of the plant, 7 cm deeper than it was.
Immobile insect adhering to the surface of the plant, covered with light or dark brown oval shield 2-5mm long. It feeds on plant sap and sprinkles around sticky secretions that serve as food for the larvae during their journey from the mother's shield to the place of suction to the plant. In the larval stage - very small colorless 0.5-1mm. mobile insects emerge from under the mother's shield and quickly spread over the aerial part of the plant. Having found a convenient place, they stick and begin to develop.
Female scale insects on the stem of the plant. The right picture shows their mobile larvae, tramps (enlarged).
Plant , badly damaged, has a sloppy appearance by the scabbard. The leaves and trunk are completely splattered with sticky secretions, on which dust settles and soot fungi settle. As a result, the surface of the plant is covered with a black coating, which prevents it from breathing and receiving solar energy. Plants living in enclosed spaces are especially affected by scale insects.
When you are outdoors in the warm season, the number of pests and their influence quickly decreases. This is due to the presence of natural enemies of the scale insect in nature. The stickiness from the surface is washed off by rains, it is also food for ants, wasps, bees.
Prevention: With a sponge dipped in plain water, carefully remove stickiness and pests from the stem and leaves.
Control methods: 2. - 3. multiple treatment with an interval of one month with insecticidal preparations, outside .
"Aktellik", "Confidor maxi", "Calypso", "Proteus", "Mospilan" - chem. drugs.
"Aktofit", "Dachnik" - biological products.
Black(
Various fungi settle on the secretions of aphids and scale insects. On the leaves of the shoots of the fruits, a black bloom forms, which prevents respiration and photosynthesis. Which leads to premature shedding of leaves and a general depressed state of the plant. Disease of plants in closed ground with high air humidity (greenhouses, winter gardens), appears on plants affected by aphids or scale insects.
Black bloom, sooty mushroom on the underside of the leaf.
Prevention:timely protection of plants from pests, indoor air circulation. Black plaque should be removed, foam rubber soaked in water.
Control methods: outsideliving quarters and observing all safety precautions.
Very small (0.2-0.5mm) spiders with an orange-red tint. They settle under the lower part of the leaves, braiding them with cobwebs. They feed on plant sap, preferring young leaves and shoots. High room temperatures and dry air contribute to the development. Damaged leaves become covered with yellowish specks, dry out and crumble prematurely.
Lemon leaf infested with spider mites. The upper side of the leaf is covered with yellow dots, the underside of the leaf is white.
Prevention:frequent spraying with cool water, wiping the stem and leaves with a damp sponge. In the warm season, expose plants to the open air.
Control methods: 2. - 3. multiple treatment with an interval of one month with insecticidal preparations,outsideliving quarters and observing all safety precautions.
Slugs and snails
Terrestrial gastropods pulmonary molluscs of the stalk-eyed order. The garden snail has a spiral-twisted shell; slugs lack this outer shell.
Their body is covered with mucus; when moving on any surface, they leave behind them shiny pearlescent stripes. During the day they hide in humid and shady places. They reproduce by eggs, which are laid in the ground. The larvae that appear initially feed on fallen leaves and other organic debris, and as they grow, they begin to prefer young shoots and leaves. Eating intensively, they become sexually mature rather quickly within 2-3 months. At night and on rainy, cloudy days, they cause significant harm, especially to seedlings, cuttings and young plants located near the soil surface. Citrus plants are attacked by snails and slugs while outdoors in a greenhouse or basement.
Control methods: - boards, roofing felt, linoleum are laid out in free areas near the plants, slugs hide under these artificial shelters, where they are collected and destroyed. In places of mass reproduction of slugs, the plots are dusted with: fluffy lime (30-40 g per 1 sq. M.), Ground superphosphate (30-40 g. Per 1 sq. M.) Or ammonium sulfate (20 g. Per 1 sq. M.).
The drug "Emaldehyde" in granules is on sale, its main drawback - effective until the first rain.
Lemon trees, like other indoor plants, can be affected by viral and infectious diseases and pests.
Although this does not happen often, it is better to know what lemon diseases exist, how they affect the external condition of the plant, and what are the methods of their treatment. We will find out which viruses and infectious diseases affect the indoor lemon, which pests can attack it, and what to do in such cases.
Why does lemon get sick
Lemon is easily exposed to diseases and attacks of pests and viruses in the following cases:
- If he did not manage to get stronger after recovering from other diseases.
- If he is provided with unimportant care: contaminated soil, poor lighting, illiterate pruning, insufficient soil fertilization, improper watering, etc.
- If a virus or pathogenic bacteria brought insects or a diseased stalk during grafting.
Viruses and bacteria can get on the plant when the room is ventilated, but this happens quite rarely.
Most often, viruses, bacteria and pests infect the leaves of indoor lemon. However, if the lemon drops fruits and leaves, the reason for this may be a lack of trace elements:
- If the light leaves have a pronounced network of green veins, the lemon needs manganese, zinc or iron. Another reason is disturbances in soil pH.
- If an adult leaf loses its gloss, dries at the ends and turns reddish-brown, the plant lacks phosphorus.
- If pale yellow specks appear on the leaf, and it turns yellow and dull over time, this indicates a lack of nitrogen.
- If grooves appear between the veins of the leaves, the lemon needs potassium dressing.
- If the plant sheds ovaries, it urgently needs manganese.
Too frequent feeding is not useful for the plant. If leaves fall on a lemon, what to do in this case? Postpone feeding and evaluate the correctness of care: suddenly you are doing something wrong.
Indoor lemon viral diseases
We will learn about three viral diseases in which lemon sheds leaves: why they often lead to the death of the plant, and whether they can be cured:
Sheet mosaic
Having got sick with it, the leaves are covered with dark or light strokes in the form of a mosaic, lose their shape. The growth of the tree slows down noticeably.
This disease cannot be cured by any means, but symptoms can be reduced by regularly fertilizing the soil and providing the plant with proper care. If you have other lemons, it is better to destroy the plant infected with the virus as soon as possible.
Citrus Cancer
When infected with this virus, brown spots appear on foliage and fruits. When the form is neglected, the leaf falls off, the lemons acquire an ugly shape and a little later the tree dies.
It is impossible to cure citrus cancer: to prevent it in the spring, we treat the plant with a liquid copper fungicide.
Tristeza
Having picked up tristeza, the lemon loses its foliage, the bark or twigs die off on it. The plant dies - it cannot be cured.
Viruses most often infect weakened lemons that are poorly cared for.
Fungal and infectious diseases of indoor lemon
Consider the main diseases of lemons, which are fungal and infectious in nature, their symptoms and methods of treatment.
Most often, indoor lemons are affected by the following fungi and infections:
Gomoz
When homosed, the branches and trunk of the plant are covered with elongated spots of a red-brown hue, under which the bark quickly dies and cracks. The cracks ooze with a sticky, golden and fast-setting substance.
Causes of homoses: excessive humidity in the room, cuts or fractures in the bark, deficiency of phosphorus and potassium, excess nitrogen fertilizers, diseased soil or deep burial of the trunk.
How is homoz treated? We cut off all the spots from the bark of the trunk, process the cuts with a 3% solution and use a putty from a garden varnish. We repeat the treatment until the spots on the bark of the trunk stop forming. If branches are covered with spots, cut them off entirely and destroy them.
Anthracnose
This is a fungal disease in which leaves fall from a lemon, and many do not know what to do with this. First, the leaf turns yellow, then flies, as well as the buds. The branches of the plant gradually die off, and red spots appear on the lemons.
To get rid of the fungus, we destroy the dead branches and spray the lemon with Phytosporin or a 1% solution of Bordeaux liquid. Spraying is carried out three times.
Scab
Another fungal disease of indoor lemons is scab, in which young leaves become covered with transparent yellowish specks, gradually turning into pink-gray growths. Spreading over the leaf, these growths destroy it along with the shoots. Fruits with scab are covered with orange spots, eventually turning red-brown. In this case, the lemon drops the fruit.
In order not to destroy the entire plant, we cut off and destroy all the affected parts of the plant, and spray the crown with one percent Bordeaux liquid.
Melseco
With melseco, the lemon shoots dry up, the foliage falls off, starting from the tips of the branches, and the cut of the branch turns red.
Poor lighting is to blame for this lemon disease: in winter, the plant did not have enough light, and it was not supplemented.
There is no cure for melseco: we observe the plant, and if it continues to hurt, we destroy it.
Root rot
If the lemon abruptly drops the leaf, dig it out and examine the roots. Having found rotten roots, we cut them off and transplant the lemon into a new disinfected soil.
We put the transplanted plant on a light windowsill, and avoid watering for a week, just wipe the leaves with damp gauze or a sponge.
In addition to infectious and viral diseases, indoor lemons are affected by harmful insects. We will find out which pests are attacked by a lemon grown at home, and how to deal with them.
Shield
Scale larvae settle on the underside of the leaves and subsequently move to the outside. The plant withers, dries up, quickly picks up viruses and infections.
To get rid of the scabbard, we use a special insecticide or soap solution, for which we dilute 2 tbsp in water (1 liter). any liquid soap. Moisten all areas affected by insects with soapy water. We wait one hour, rinse the plant under the shower and repeat the treatment after a couple of days.
Common aphid
Colonies of light green aphids usually settle on young shoots that are not overgrown with bark. First, they attack the bottom of the leaf, then go upstairs, simultaneously sucking the juices. The foliage collapses and dies.
If there are few aphids, we cut off the affected shoots and destroy them together with insects, after which we feed the plant with complex fertilizer. If the aphid has covered most of the indoor lemon, spray the tree with insecticide or garlic infusion, for which we peel 4 heads of garlic and soak them in 5 liters for 24 hours. After we filter.
Spider mite
Young twigs and leaves are often affected by this insect. The foliage curls up and a spider web appears around it. The lack of air humidity is to blame for the appearance of a spider mite.
To get rid of insects, we spray the tree with a 1% solution of boric acid, performing the procedure four times.
Root aphid
Unlike ordinary aphids, root aphids found in infected soil affect the roots.
To destroy it, we transplant the lemon into disinfected soil by treating the roots with a contact insecticide or a weak garlic tincture.
In many sources, you can find advice on processing lemon with an alcohol solution - this is strictly prohibited. Lemon is intolerant to alcohol.
As you can see, lemon diseases are numerous and sometimes very serious: some lead to the death of the plant. To protect it from misfortunes, plant the plant only in disinfected soil, give it a regular shower and wipe the foliage and branches with wet gauze, treat the crown with soapy water once a month, and often inspect the tree for infection with diseases or insects.
The indoor lemon is a living creature, so it can also have problems. The troubles that happen with lemon can be divided into three groups: improper care, pests, diseases.
π Improper care
β Failure to follow the rules of plant care (watering, lighting, temperature, lack of nutrition, transplanting and disturbance of the pH balance of the soil). With insufficient watering, the tree dries up, with excessive watering, yellowness of the leaves appears and the root system decays.
β The deficiency of a particular trace element can be determined visually. With a lack of iron, the leaf, which has a rich green color, first becomes "speckled" (alternating green and yellow spots), then fades, turns yellow and dries up.
β With a lack of phosphorus, the leaves acquire an earthy-rusty color, the tips of the leaves dry out. With a lack of potassium, the leaves wrinkle, forming "wrinkles" and folds.
β With a lack of manganese and boron, the ovaries crumble. Correcting the situation is much more difficult than watering a lemon in time with special fertilizers for citrus fruits.
π Lemon pests and how to deal with them
β Shields and false shields (larvae are hidden by a dark brown shield). If they are present, the leaves fall off, the branches dry out, the plant slowly dies. Pests must be cleaned off (with a toothbrush or a sharp stick), washed with a lemon with a soapy emulsion. You will learn about another way to combat these pests from the video.
β Spider mite (citrus red mite). The larvae are located on the underside of the leaf; in this case, the leaf is shrouded in cobwebs, which gradually envelop the entire plant. The leaves become discolored, dry up and fall off, flowers and fruits are damaged. Spider mites are more likely to appear in dry indoor air. In case of spider mite infestation, lemon can be sprayed with 0.15% Aktelika solution. Spraying will have to be repeated three times with an interval of 10 days.
β Mealybug (larvae and females feed on the entire aerial part). If they are present, sticky secretions of the worm appear on the surface of the leaves, later the leaves dry out, spots and cracks form on the fruits. Fruits, not ripe, fall off. The plant must be periodically examined and mechanically destroyed the larvae and females of the mealybug.
β Citrus aphids (small insects of black or yellow-green color). The tops of young shoots are paralyzed. If they are found, the lemon should be sprayed with a 0.15% Aktelika solution. Spraying will have to be repeated three times with an interval of 10 days. To prevent aphids from appearing, you can put a pot of fragrant geraniums next to the lemon.
βThrips (look like a black line on the leaves, so small). They shit more than they suck the juices from the plant, they can fly, they spread viruses. To destroy them, you need to wash the tree from the shower (cover the soil with a film) and treat it with a soapy emulsion.
β Whitefly (white small moth). Larvae of greenish-white color are located on the lower part of the leaves. Getting rid of them is quite problematic. In this case, the lemon is sprayed with insecticides at least 5 times every 3 days.
π Diseases of indoor lemon and how to treat them
β Indoor lemons can be sick with many diseases caused by fungi, viruses, bacteria and mycoplasmas. The result of their impact is a variety of spots, ulcers, rot, wilting, growths, growths, etc. Harmful microorganisms are spread by insects, water drops during spraying and irrigation, wind.
β The symptoms of infection of indoor lemons by bacteria and fungi are similar, but with an infection caused by fungi, along with increasing spots, fungal spores are visible on them - gray bloom, brown pustules or black sporulation dots.
β Diseases most often appear on weakened plants, therefore, proper care for lemons at home, pest control, cutting out the affected parts of the plant, with processing the cuts (you can use activated carbon) are important. It is better to immediately remove all flowers, buds and fruits from a diseased lemon so that they do not weaken the plant.
β To suppress many pathogens and for prophylaxis, it is effective to use the biological product "Fitosporin" (the drug is not toxic, odorless). They are sprayed and added to water for irrigation according to the instructions. You can spray 2-3 times with a 1% solution of Bordeaux liquid.
β Anthracnose is the most common lemon disease, caused by a pathogenic fungus. With anthracnose, the buds fall, the leaves turn yellow and fall, reddish spots appear on the fruits, the branches die off. It is necessary to cut off dead shoots and carry out the treatment described above.
β Parsha (citrus wart) is also a common disease of a fungal nature. In this case, small transparent yellowish spots appear on young leaves, turning into pink-gray warts. Warts grow over time, forming an outgrowth, later the shoot dies. Orange spots appear on the fruits, increasing in size, they become reddish-brown, the ovaries fall off. The affected parts of the plant must be cut off and burned, the lemon crown should be sprayed with a 1% solution of Bordeaux liquid.
β Gomosis (gum flow) is manifested by longitudinal brown-red spots on the branches and trunk of the lemon. The bark in these places gradually dies off, a gummy golden liquid flows out of the cracks, which freezes in air.
There may be several reasons for this disease: buried planting of seedlings, not disinfected soil, lack of drainage, excess nitrogen, lack of phosphorus and potassium, mechanical damage, too high air humidity.
To treat homoz it is necessary to find out the cause of the disease and eliminate it. The lesions on the trunk must be cleaned with a sharp knife, cutting out the affected areas, disinfected with a 3% solution of copper sulphate and cover the wounds with garden pitch. It is recommended to treat the wound several times until it is completely healed. It is better to cut and burn the affected thin branches.
β A sooty fungus can settle on lemon when infected with scale insects, mealybugs. In order for it not to appear, it is necessary to deal with pests in a timely manner.
π Inspect lemons more often so you can spot pests and diseases early. The measures taken in time will not do much harm to the lemon.
Many lemon diseases at home are dangerous, some are completely incurable. And in order not to lose your citrus, you need to know how it can get infected and how you can save it from trouble.
One or a combination of several of the following factors can lead to disease.
Captures entire areas of young green twigs, preferring the most delicate growth
Video about indoor lemon diseases
The fight against it, depending on the number of insect colony on your citrus, is different. If there are few aphids, it is enough to manually crush them, cutting off the affected areas and unscheduled fertilizing the lemon tree with complex fertilizing. In case of a large amount of damage, insecticides such as diazmnon are used. Spraying with garlic infusion helps very successfully. To do this, 7-8 heads are cleaned, pounded, infused for a day in a bucket of water, decanted and our product is ready.
Replacement of diseased soil with subsequent calcination of the infected soil helps from root aphids. And we dip the plant in a solution of contact insecticide or, again, an infusion of garlic, only the concentration of the latter is taken twice as weak.
Replacement of diseased soil with subsequent calcination of the infected soil helps from root aphids
How to deal with it? Just like with aphids: spraying with garlic water, insecticides and soapy water. We take 2 tablespoons of liquid soap, dilute in a liter of water and treat the affected areas. After an hour, we give the plant a good shower, washing off the soap from the foliage. We repeat in two or three days.
A spider mite on a lemon, like aphids, loves young leaves. Its presence is noticeable thanks to the characteristic cobweb encircling the swirling leaves. The mite settles on plants that grow in very dry rooms. He does not tolerate moisture. Therefore, we spray the diseased citrus abundantly with a 1% solution of boric acid. Sometimes a single procedure is enough to lime the tick, but if the enemy does not give up, repeat after 4-5 spraying.
It should also be remembered that protection against insects and ticks helps to prevent viral, infectious diseases, some of which penetrate the tissues with the saliva of aphids or scale insects.
A spider mite on a lemon, like aphids, loves young leaves
Citrus infections
It will focus on diseases of a bacterial, fungal and viral nature. Many of them are easy to treat, some are difficult, and many viruses are incurable. The result of the weakening of the lemon with improper care or from damage by insect pests often becomes fungal misfortunes, for example, a sooty fungus, it leads to even greater weakening, drying out, and a sharp slowdown in growth.
This attack is easily recognizable by the bloom in the form of ash on the leaves and branches. It is easy to get rid of it - it is enough to rinse the wood well under a warm shower with a dish sponge. The room where the infected citrus grows, in the meantime, needs to be well ventilated.
The scab is also fungal in nature. It manifests itself as putrid lesions of leaves, fruits, branches. The spots darken, soften. Affected foliage and fruits fall off. Its spores are carried by wind or insects. The best way to fight scab is prevention. In the spring, we treat the plant with two percent solutions of copper and iron sulfate. If signs of a disease are detected, we remove and destroy all diseased areas. And the lemon itself is treated with a 5% solution of Bordeaux liquid or Strobilin.
Another fungus is wart. The name speaks for itself. Wart-shaped growths appear on the leaves. Destroys the annual growth of greenery and the yield of fruits, greatly weakens your citrus fruits. We fight with it as well as with a scab.
The best way to fight scab is prevention.
Most often, the answer to the question of why a lemon falls off is scab or wart.
Infectious diseases are more difficult to treat. The most common among them are gommosis and root rot. Hommosis is expressed in decay, cracking of the trunk bark, and gum leakage. This greatly weakens the plant, and sometimes leads to the death of the ground part. Two preventive rules are very effective against gommosis:
- We do not deepen the root collar, otherwise the risk of stem rotting increases many times
- We water the plant with warm water - no extra stress is needed for the roots.
Root rot is similar to gommosis, however, only the roots are affected. The sign is wilting of leaves, drying out of whole branches, general weakness, premature leaf fall.
Video about helping lemon
We fight as follows:
- We remove the plant from the pots, clean the roots from the soil
- We sterilize the contaminated soil by calcining, pour a new one into the pots.
- Cut off rotten areas with a sharp knife
- Place the roots for an hour in a pink solution of potassium permanganate.
- We remove, dry slightly, dust the cut off places with wood ash.
- We plant in new soil without deepening the root collar.
- We closely monitor the plant, fertilize more often.
And viral diseases of indoor lemon are incurable.
Of these, the most common are leaf mosaic, expressed in the form of pale spiderweb patterns on foliage, and cancer. Cancer looks like a scab or rot, but the fruits and the tree rot, as it were from the inside, burn out. Such plants must be destroyed before they infect others.