Geranium diseases and their treatment: photos and description [2019]

Why do the leaves of indoor geraniums turn yellow: the main reasons

It is no secret that in most cases the reason why the leaves of indoor plants dry out and turn yellow is due to improper care. If the situation is not corrected, this may ultimately lead to the complete death of the plant. Therefore, you should study the typical shortcomings in growing geraniums at home.

Mistakes when planting and replanting plants

Sometimes the reason why geranium leaves acquire an unhealthy yellow color and begin to gradually die is an incorrectly selected pot. If its size is too small for the root system (especially in plants whose age is several years old), then pelargonium does not have enough capacity for development. But you should not choose a pot that is too large: in this case, the geranium will begin to actively grow roots to the detriment of green mass and flowering, which is also undesirable.

When planting a plant, it is important to ensure good drainage. Expanded clay purchased at a flower shop or the hardware department of a supermarket is ideal. If there is insufficient drainage, excess moisture will not leave the soil. Proper air circulation will also be impaired. In some cases, the yellow color of the leaves is caused by damage to the roots due to careless transplantation.

Lack of minerals

The supply of minerals found in the soil is a resource that quickly runs out. And immediately after transplanting into new soil, the elements are not always contained in the required quantities. But geranium spends a lot of energy on flowering and growth. Therefore, there is a need for additional and regular addition of mineral complexes to the soil through root feeding. The need for them increases during the growing season, when pelargonium is actively growing and blooming. A lack of minerals often causes the leaves to turn yellow. But it is important to remember that an excess of elements will also negatively affect the condition of the plant.

Improper care at home

As already mentioned, geranium is a fairly unpretentious house flower that feels good in the room. But to prevent diseases and yellow leaves from appearing, you must try to provide it with suitable conditions in which the plant will feel comfortable.

Pelargonium loves light, but direct sunlight is harmful to its leaves. Low and excessive air humidity in the room can cause great damage to the appearance of the plant. Its optimal figure is 50–60%. Geranium dries in cool drafts. In autumn and winter, it is advisable to keep the pot away from heating devices in the apartment - the heat from them will cause the leaves to turn yellow and dry out. It is better to take it out to a cool glazed balcony if the temperature in the loggia remains around 12 °C, reducing watering to once a week.

Another common mistake is related to watering. Its frequency should depend on the time of year: in warm months, geraniums need to be watered more often. You should also pay attention to the quality of the water. If it is too hard, it will lead to excess calcium in the soil. The leaves will react to this and turn yellow. To make water suitable for irrigation, it must be allowed to settle for several days; add a couple of drops of lemon juice or a small pinch of citric acid.

What to do if geranium leaves turn yellow

The plant can be saved if the necessary measures are taken in time. First of all you should:

Make sure the pot is suitable for geraniums and has good drainage. If necessary, you need to transplant it into a container that meets all the criteria as soon as possible. If the geranium blooms, then all flower stalks must first be carefully cut off.
The pot should be placed on the sunny side. If the plant is exposed to direct rays, you will need to create temporary artificial shading. It is important that pelargonium does not stand in a draft.
Avoid exposure of geranium to heating devices.
If possible, maintain an acceptable temperature during the cold season. In other months there are no strict recommendations in this regard.
If the air is too dry, you can place a container of water or moistened expanded clay next to the pot. Florists do not recommend spraying.
Adjust watering and fertilizing of the plant. It must receive sufficient amounts of water and minerals. But overflow and excess of elements are also destructive.

When caring for pelargonium in an apartment, it is best to adhere to the “golden mean” rule. If you correct the mistakes described above in time, the flower will not disappear and will quickly recover, delighting you with carved green leaves and abundant flowering.

Leaves and flowers fall

This unpleasant process can be frustrating for any geranium owner, but there are a number of possible solutions to this problem.

Causes of the phenomenon

The reason for this situation is most often the indoor microclimate that is inadequate for geraniums.
Acute deficiency of microelements necessary for the plant.
Another reason may be parasites that eat the plant from the inside.

In all three cases, you should immediately provide assistance to the problem plant.

What to do?

Based on the problem, the solutions are as follows:

it is necessary to change the temperature regime (moderate temperature, geranium does not like either heat or cold);
the humidity in the room should be moderate (geranium does not like either high humidity or excessive dryness);
carry out foliar feeding to ensure that the necessary microelements enter the soil;
treat the surface of the buds and leaves with a special bacterial spray against insects.

Preventive measures

It is not recommended to change the location of the geranium after the buds have already appeared ; it is necessary to monitor the microclimate in the room and carefully examine the plant at least once a week for the appearance of parasites.

Pelargonium: other diseases and care errors

Geranium leaves indicate the health of the entire plant. This is a kind of indicator that can indicate possible diseases of pelargonium, incorrect watering and fertilizing patterns. There are some specific “symptoms” that can tell you a lot.

The edges of geranium leaves dry out

If the edges of the leaf blades of a geranium begin to dry, there may be two reasons for this condition:

The plant does not receive enough moisture. This drying usually occurs if the pot is in a very hot place. It is better to move the geranium to partial shade.
The root system of pelargonium was damaged. You can try to replant the plant by treating the roots with a weak solution of potassium permanganate. But to be on the safe side, it is better to cut and root the cuttings in water or soil so as not to lose the variety.

Leaves curl inward

If the leaves of pelargonium begin to curl inward, this may be evidence of an imbalance of mineral substances. This condition is caused by a lack of nitrogen or excess potassium. Nitrogen in large quantities is only needed during the growth stages of the plant, so the leaves of young plants often curl. To prevent deficiency or oversaturation of elements, it is recommended to use ready-made complex mineral fertilizers for flowering plants: they contain substances in the required proportions.

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Treatment of diseases

Blackleg. The stem darkens and rots. Infected cuttings are pinched off and the cut top is rooted.

Gray rot . It occurs on peduncles, leaves and stems. For resuscitation, remove all rotten parts, temporarily do not water or feed the geranium. Treatment is carried out with solutions: Fundazol or Vitaros.

Late blight (late blight). Fungal spores enter the plant from the soil, tubers, and plant tops. Indoors, spores are transferred to other flowers from the leaves by drafts. The cause of the fungus is excess moisture and dense soil. The soil in the pot needs to be updated and the pelargonium treated with such products as Ridomil, Previkur or Profit Gold. In winter, the flower indoors is set to the lowest possible temperature and the number of waterings is reduced. Equipment and pots after diseased bushes should be thoroughly sterilized.

Chlorosis . With a deficiency of iron and/or manganese, geranium may develop chlorosis. Then growth slows down and the color of the leaves changes. The bush needs to be transplanted into fresh soil and fertilized with a full complex of mineral fertilizers.

Etiolation. Low lighting leads to elongation and deformation of the trunk, smaller leaves and loss of their former color. In summer, the flower pot should be placed on the sunny side, but provided with partial shade during the daytime sun. In winter, artificial lighting will be required.

Eden . Even when absorbing water from waterlogged soil, pelargonium does not completely evaporate all excess. Then she gets edema. To prevent this from happening, you need to provide it with drainage not only in the pot, but also place a tray with expanded clay or broken bricks under it. After drying the soil, reduce the number of waterings and regularly ventilate the room.

It is important to know! Leaves turn yellow when there is an excess of nitrogen in fertilizers, and dry out as a result of oversaturation with phosphorus. It is necessary to replant the geranium in fresh soil, limit nutrients with these microelements, and add stimulants to the soil: zircon or epin. Do not oversaturate the soil with herbicide when fighting weeds and with fungicide when treating rot. These drugs worsen the life of the plant and lead to loss of foliage.

Prevention

Almost all diseases and problems of pelargonium arise due to violations in care, so to prevent them you just need to follow simple rules:

Maintain the correct temperature;
Control air and soil humidity;
Control lighting;
Regularly feed the soil;
Control the occurrence of pathologies in the plant;
Fight insects.

Among insects, you should pay special attention to spider mites, whiteflies and aphids. They often appear in places with dry air and are carriers of infections and viruses. If these insects are found in the room where flowers grow, it is necessary to wash the plant and treat it with insecticides.

Other diseases: causes and solutions

Problems when growing geraniums mainly arise from poor care, but flower diseases caused by bacteria should not be ruled out. Blackening leaves and stems should alert the gardener.

weeping spots on the bottom of the leaf, round in shape;
the spots subsequently develop into large dark brown lesions;
if you feel the damage, it will be hard;
the infection spreads very quickly and therefore the stem turns black in a few days;
the roots are black, but without signs of rot.

Often blackening of the leaves and stem leads to the death of the plant, but it is worth noting that such an infection cannot be treated, and it is better to destroy the flower along with the soil and disinfect the flowerpot.

The main measures to prevent this disease is compliance with sanitary standards. All tools used to work with the plant must be constantly disinfected.

In addition, it is worth monitoring the air humidity in the room where the geranium is located and conducting ventilation. Don’t forget to take the flower out onto the balcony in the summer, this will have a beneficial effect on its health.

The requirements for caring for geraniums are not complicated and quite doable. When grown correctly, geranium will delight you with magnificent inflorescences for a long time.

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Medicinal preparations for geranium

The following medications can be used to combat geranium problems:

Aspirin. It can be used when insects are detected. To prepare the solution you will need one tablet of medicine and 8 liters of water. The resulting composition must be sprayed on geranium leaves. The procedure can be repeated after 3 weeks.
Marathon. This drug is also intended to combat insects, but they need to be watered in the soil. The procedure can be carried out a few days after planting.
Messenger.Used to increase the plant’s own immunity.
Monterey. It is sprayed onto plants when traces of caterpillars are found on it.

Geranium has long been considered one of the most useful plants. The medicinal flower is capable of killing a huge number of bacteria and treating a variety of diseases, from a common runny nose to purulent wounds. That is why high-quality care will allow its owner to create a healing atmosphere in his home.

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Pelargonium leaves turn yellow and dry: preventive measures

It is much easier to prevent yellowing of leaves than to cure an already diseased plant. To avoid having to fight to save your favorite geranium, you should:

Replant the pelargonium in a suitable pot in a timely manner.
Find a place for it, closed from drafts, with enough diffused light.
Water as the earthen clod dries out.
Apply mineral complex fertilizers suitable for flowering plants in a timely manner. The application rates and schedule are indicated in the instructions for the product. During the flowering period, it is recommended to do root feeding twice a month. Organic fertilizers will also be useful.
In winter, you need to try to keep the geranium cool.
Regularly inspect the plant for infection by pests, bacteria, fungi and viruses, providing treatment if necessary.

Yellowing of geranium leaves is an alarming sign. It is important to understand in time the cause of such a plant malaise. By carefully examining it and analyzing the conditions under which the pelargonium is kept, you can find what provoked such a reaction. The sooner the errors are corrected, the less damage will be done to the geranium.

Lack of nutrients in the soil

Incorrectly selected soil or depleted soil in a flower pot is the most common cause of yellowing geranium leaves. If there is a lack of at least one of the beneficial nutrients, the plant loses its decorative qualities, the leaves change color, then dry out and fall off. To maintain the natural color of leaf blades, sulfur, nitrogen, magnesium, zinc, copper, iron, phosphorus, boron and manganese are needed. Negative external changes in the plant will tell you which element it is missing:

Gradual yellowing of the entire plant (stems, petioles and leaves) at the same time indicates a lack of sulfur;
If yellowness spreads on older leaves (from the edge to the central part), this is a signal of nitrogen deficiency;
Yellowing or chlorosis between the veins on older leaves is a magnesium deficiency;
Yellowing young leaves with curling edges indicate a lack of zinc;
The leaves become yellow-green from the base to the edges - a lack of copper;
Yellowing between the veins on the surface of young leaves is a lack of iron;
The upper leaves remain green, but the lower ones begin to turn yellow at the edges, and then gradually chlorosis spreads over the entire surface - this is a lack of phosphorus;
The appearance of small yellowish spots on the surface of middle-aged leaves indicates a lack of boron;
Dotted yellow spots gradually fill the entire surface of the leaf - this is a deficiency of manganese.

Chlorosis can be stopped only at the first signs and only in the earliest stages. To do this, it is recommended to urgently transplant the geranium into a new soil mixture with all the necessary nutritional supplements. Specialized stores offer a wide range of soil mixtures recommended specifically for growing geraniums. After some time, such mixtures also become depleted, so it is necessary to regularly add mineral fertilizers to the soil.

Small leaves

It often turns out that after winter “sleep” new leaves begin to grow on geraniums, but they are very small and pale - why does this happen?

Why does this happen?

If you turn to experienced gardeners with a question - why new leaves on geraniums grow much smaller compared to the previous ones, then most likely the answer will be as follows: geraniums need to be pruned regularly, this is the only way the plant will not lose its decorative properties.

How to solve a problem?

The first step is to see if the flowerpot in which the geranium grows has become too small for it - this is one of the reasons why the leaves began to grow small.
If the pot is chosen correctly, there is enough drainage at the bottom, and the flower receives moisture in a timely manner, then you can try changing the soil. Geranium grows and develops quickly and spends a lot of energy during the flowering period, and it is likely that the soil in the pot has become depleted.
Next, you can carry out foliar feeding - irrigate the plant with liquid fertilizers. But it is worth remembering that you cannot exceed the dosage recommended by the fertilizer manufacturer - you can burn the geranium leaves and then it will become even worse.
The most suitable feeding for geraniums is NPK 10-10-10.
It is worth not forgetting about root feeding, which is carried out every two weeks. If the leaves become small, then in addition to nitrogen you need to add phosphate and potassium.
It is good to add iodine diluted in water to the soil. Take 1 drop per 1 liter. Then draw the solution into a five-cc syringe and carefully inject it into the soil as close as possible to the walls of the flowerpot. You need to be extremely careful, because if the composition gets on the roots, they can get severely burned.
If after transplanting the geranium small leaves begin to grow, then it is quite possible that the roots of the plant were damaged during the process of transshipment. In this case, you need to water the flower with Kornevin and strictly monitor the soil moisture.

Excessive watering

The watering regime, namely volume and frequency, also play an important role in the full development of indoor geraniums. Often yellowing of the leaf mass begins due to an incorrectly selected regime. A slight drought or untimely watering will not cause much harm to geraniums, but repeated overwatering is the beginning of acidification of the soil and death of the root part due to rotting. The emerging root rot prevents the entire plant from being supplied with sufficient nutrition. Yellowness and wilting appear on the leaves. The flower begins to slowly die.

The unpleasant smell of the soil mixture, which appears due to the beginning of the rotting process, and the presence of numerous small fleas that jump on the surface of the soil will help determine excess moisture in the soil. It will not be possible to save the plant by completely stopping soil moisture. The rotting process will continue. It is urgent to replace the substrate in the pot with geranium, and when replanting, inspect and treat the root part of the flower. It is recommended to remove diseased and damaged roots and treat the remaining parts with a disinfecting solution. If more than half of the root system is already damaged, then you can try to save the geranium with the help of green, healthy shoots. By cutting them into cuttings and rooting, you can get a new healthy plant. In further care, it is worth paying more attention to the watering regime so as not to repeat mistakes.

What to do if they become small?

If you ask gardeners what to do if geraniums have new small leaves that do not at all correspond in size to the previous ones, they will answer that in order for the flower not to lose its decorative properties, annual pruning should be done (at the end of winter - beginning of spring) or pinch the top. This will stimulate the growth of side shoots, resulting in a fuzzy plant. Take the time to replant a pet with small leaves, choosing the right pot for it. And the cut stems can be rooted and a new geranium can be grown from them. You should also apply foliar fertilizing, saturating the plant with nitrogen.

Important! When caring for geraniums, you should adhere to the “golden mean” rule - do not overdo it with fertilizers and watering.

Excess moisture, frequent fertilizing, improper air temperature and dense plantings do not contribute to normal growth.

Sunburn

Geranium tolerates direct sunlight and can be outdoors in the summer under the sun's rays. But the impact of such rays on a flower through a window glass leaves sunburn on the leaf plates. First, those leaves that are closest to the glass suffer, and sometimes even pressed against it. Yellow-brown spots appear on them. Such yellowing does not pose a threat to the life of the geranium, but its decorative qualities still suffer. After changing the growing location and pruning damaged shoots, the beauty of the geranium is gradually restored.

What to do if geranium leaves curl?

Peculiarities
Causes of twisting
Prevention

Pelargonium is a popular plant widely used in indoor and garden landscaping. Many people call it geranium, but from a botanical point of view this is not entirely true - although pelargonium belongs to the geranium family, it is nevertheless a completely different species. However, this is the name that is popularly accepted, so for convenience, within the framework of our article, we will continue to use this word in the text.

The appearance of pests

Geranium is not often attacked by harmful insects, but there are still cases when pests such as spider mites, whiteflies and mealybugs appear in a flower pot with a plant. Yellowing and falling of leaves begins after the plant loses the juice found in the stems and leaves. It is a favorite delicacy and at the same time the main food for these pests. The greatest effectiveness in combating this invasion can be expected only in the early stages of crop damage. Here you cannot do without special chemical preparations of general or targeted action. The most popular and effective flower growers consider Aktara, Fitoverm and Atellik.

Stopping development due to pest infestation

Despite the fact that the fragrant smell of pelargonium repels insects, some species are still capable of infecting it. At the very beginning of the disease, the flower may look healthy, but its development will stop. Thus, geraniums do not grow in the presence of mealybugs. They accumulate in secluded places (in the axils of leaves), feeding on green mass, including the stem.

Pests can significantly reduce the process of photosynthesis and use systemic insecticides to combat them. Whiteflies also inhibit the development of geraniums. Gently shake the plant and if a kind of white “dandruff” rises into the air, then it’s time to use insecticidal preparations in combination with substances containing potassium soap.

Of course, geranium may begin to shed its leaves due to a change in environment (for example, if it was brought from the street or balcony into the room). But if the flowers fall off, then this indicates the presence of a serious problem and it needs to be solved as quickly as possible. Let's figure out why geranium flowers fall off and there are few leaves.

Diseases

Geranium is susceptible to diseases such as chlorosis, root rot and rust. The fungal disease rust is considered the most dangerous and, unfortunately, the most common. The first signs of this disease are many small spots of yellow or light brown throughout the leaf part. After a short time, these stains become dry and, when cracked, crumble into a rust-colored powder. This is what fungal spores look like, which can destroy an entire geranium bush. If assistance is not provided in a timely manner, the plant first loses its leaf part and then dies completely.

To save a plant from a harmful disease, it is recommended:

Trim off all diseased parts of the plant;
Treat the indoor crop with the most suitable fungicide.

Before using chemicals, you must carefully read the instructions!

Why do they fall?

Amateur flower growers agree that for the formation of buds and their successful development, plants require moderate air temperature and microelements. For example, if there is a deficiency of boron, the flowers will begin to fade before they have yet bloomed, after which the oppressed specimen must dry up completely and help must be provided immediately.

If you were unable to purchase special fertilizers, you can do foliar feeding yourself - dilute 1 g of boric acid per liter of water and spray.

Boric acid contains 17% boron, while boric acid powder (14-16%) contains from 2.4 to 2.7% boron.

Attention! It is necessary to inspect the unopened buds for the presence of small holes, which indicate that the plant has been damaged by budworm caterpillars.

The insect larva makes tunnels and eats the plant from the inside. You can also notice her excrement in the form of brown specks.

Collect the caterpillars with your hands, and treat the surface of the buds with a bacterial spray , which is a biological weapon against pests. After a few hours, the “enemy” will stop eating and die within 1-2 days.

It is also worth paying attention to the condition of the roots, since their drying out or excessive waterlogging will be the result of the geranium flowers falling off. It is not recommended to move the flowerpot to another place after the buds have formed.

In this video we will look at what to do if a geranium has dropped its leaves:

Natural causes

The life cycle exists not only in humans and animals, it is also present in representatives of the flora. Plants also reach a certain age when some parts, namely the leaves, begin to die. Most often these are 1-2 leaves at the bottom of the plant. Yellowing continues gradually until it completely covers the entire surface. After this, the leaf dries out. This natural reason should not bother the grower, because the entire plant is not in danger. After trimming a dried or yellowed leaf, the geranium will remain just as attractive and will continue to grow and develop.

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Leaves curl inward If pelargonium leaves begin to curl inward, this may be evidence of an imbalance of mineral substances. This condition is caused by a lack of nitrogen or excess potassium. Nitrogen in large quantities is only needed during the growth stages of the plant, so the leaves of young plants often curl. To prevent deficiency or oversaturation of elements, it is recommended to use ready-made complex mineral fertilizers for flowering plants: they contain substances in the required proportions. Often the cause of leaves curled at the edges is pests. Most often - spider mites. To detect it, you need to examine the leaf blades of pelargonium from all sides. It is advisable to use a magnifying glass. Ticks can be easily treated with chemicals - insecticides. Several treatments may be required. Viral infection is much more dangerous. With it, the inflorescences take on a clumsy, ugly shape. In this case, it is unlikely that it will be possible to save the geranium. It should be thrown out of the house to prevent the infection from spreading to other indoor plants. Pelargonium withers in a pot If geranium withers in a pot and slowly dies, then the reason lies in root rot. This disease can easily destroy a plant. Such pelargonium is usually thrown away, cutting off healthy cuttings for further rooting. The instruments must then be disinfected. To avoid root rot, you should try not to overwater the plant and ensure good drainage. Geranium leaves turn black Geranium leaves turn black if not properly cared for. Dry spots are associated with insufficient moisture, and “wet” spots that are slippery to the touch, on the contrary, are associated with excess moisture. Sometimes mealybugs are the cause of black spots. A plant infected with them begins to shed its leaves. In places where scale insects live, sooty fungi form, causing a black coating to appear. This disease is treated with insecticides. White coating on the plant White coating on geraniums is a sign of spider mites. To get rid of it, you need to remove the parasites from the plant, and then treat it with a special composition: a solution of an acaricidal agent. Leaves become smaller Pelargonium leaves inevitably become smaller with age. If the plant is too old, then its freshest shoots should be cut off for further rooting. Other reasons for small leaves in pelargonium may be: nitrogen starvation (it is necessary to additionally apply the substance in the form of foliar feeding); low indoor air humidity; high air temperature. Pelargonium leaves turn yellow and dry: preventive measures It is much easier to prevent yellowing of leaves than to cure an already diseased plant. In order not to have to fight to save your favorite geranium, you should: Replant the pelargonium in a suitable pot in a timely manner. Find a place for it, closed from drafts, with enough diffused light. Water as the earthen clod dries out. Apply mineral complex fertilizers suitable for flowering plants in a timely manner. The application rates and schedule are indicated in the instructions for the product. During the flowering period, it is recommended to do root feeding twice a month. Organic fertilizers will also be useful. In winter, you need to try to keep the geranium cool. Regularly inspect the plant for infection by pests, bacteria, fungi and viruses, providing treatment if necessary. Yellowing of geranium leaves is an alarming sign. It is important to understand in time the cause of such a plant malaise. By carefully examining it and analyzing the conditions under which the pelargonium is kept, you can find what provoked such a reaction. The sooner the errors are corrected, the less damage will be done to the geranium. ************************************************* ALSO SEE THE BEST RECIPES VISIT THE LINK https:/ /www.ok.ru/kopilkadac/topics/1456755624 ************************************** * RECIPES FROM OUR GROUP: subscribe to our group’s channel on YouTube: https://www.youtube.com/channel/UCh3yCLRgNaVrgSB6rCdQV_g

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Why are there few of them?

Experienced flower growers know that a plant takes on an unattractive appearance not only due to disease, but also due to improper conditions of its maintenance. This is especially true for light-loving geraniums, which constantly strive for the sunny side. As a result, quite often the flower stretches out , and an insignificant amount of leaves remains on the stems. This common phenomenon can be observed mainly in winter.

However, do not rush to throw away the flower - it can still be saved. Just trim the bare shoots to the required height and place the flowerpot in a bright place, but not in direct sunlight. Don’t forget to turn it periodically, then the bush will turn out even. But it also happens that your favorite geranium stops growing and new leaves do not appear. So why don't they grow?

First , carefully examine the plant for the presence of insects , since infestations can inhibit the process of normal development. If pests could not be detected, then the reason lies in the acidity of the soil and fertilizing.

Geranium diseases

Geraniums are affected by fungal and bacterial diseases. The most common diseases include the following:

1. Gray rot. Most often it occurs due to waterlogging, excessive spraying, excess nitrogen or poor ventilation of the room. In order to get rid of rot, it is necessary to treat the geranium with Vitaros or Fundazol.
2. Spotting (Alternaria blight). When this disease occurs, the causative agent of which is a fungus, spots with a snow-white coating can be seen on the leaves of pelargonium. The cause is high humidity. To eliminate the disease, you need to treat the geranium with the fungicides Gamair or Glyokladin.
3. Root rot. Signs of the disease are spots on the bottom of the geranium. It appears due to an excess of fertilizer, excessive soil moisture, insufficient ventilation and lack of heat and light. They fight root rot by reducing watering and treating with Rovral fungicide.
4. Verticillium wilt. This problem can be detected by yellowing of leaves and inflorescences. Caused by a fungal pathogen. Infection of the plant's root system occurs through the soil. To eliminate the disease, it is necessary to treat the plant with Trichodermin and replant it in fresh soil.
5. Rust. Appears in the form of yellowish and brown small spots on the surface of the leaves. Over time, the affected parts of the plant begin to fall off. To heal geranium, you must first eliminate the diseased leaves, stop spraying and lower the air humidity, and then treat the pelargonium with Topaz.
6. Root and stem late blight. The disease manifests itself in the lower part and root system of geraniums. The main reasons for its occurrence are waterlogging, insufficient lighting and excess fertilizer. Treatment consists of treating the plant with Ridomil.
7. Dropsy. Forms in the form of cones on the lower part of geranium leaves. The disease develops due to excessive soil moisture and too cold, humid air. To prevent the formation of new swelling, it is necessary to change the drainage, reduce watering and spraying, and also ventilate the plant more often.
8. Bacterial rot. When it occurs, watery spots can be found on the leaves, which over time begin to dry out, remaining on the geranium. Oxychom will help you cope with this disease. It is also recommended to eliminate diseased areas of geranium and stop spraying. Feed the plant with a mineral complex containing potassium.

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She doesn't have enough light

Geranium is a light-loving plant; it can only bloom with lush flowers on a window into which the sun peeks almost every day. Otherwise, the leaves of the plant begin to change their color, losing their saturation.

On northern windows, where sunlight rarely penetrates, geraniums hardly bloom, and if this happens, the inflorescences are not large in size.

If you realize that the geranium has changed the color of its leaves due to lack of lighting, then place the plant in a south-facing window and provide additional lamp lighting. The color will quickly recover.

Geranium flower - why do the leaves turn yellow? Other plant diseases

Geranium leaves turn yellow - what to do? Causes of the problem and ways to eliminate it.

After transplanting geraniums, the leaves turn yellow. The plant has slowed down. The lower leaves fall off. Reason: disruption of the root system during transplantation. Ways to eliminate the problem: do not allow the soil to become waterlogged, cover the plant with a greenhouse, carry out frequent spraying, and water with Kornevin.

Why do geranium leaves turn yellow and dry? The reverse side of the sheet is covered with small pimples. Cause of the disease: thrips. Treatment: plant isolation. Treatment of geranium with a solution of the drug Fitoverm, repeat the procedure after 5 days.

Why do the lower leaves of geraniums turn yellow? They lose their intense color, turn yellow and fall off . Cause of the disease: lack of nitrogen in the soil. Ways to eliminate it: regular fertilizing with complex, liquid fertilizers.

Light brown and dark brown spots appeared on the stem of the geranium. Geranium leaves turn yellow and dry, and they become covered with radial or V-shaped brown spots, covered with fluff . Disease: Botrytis fungus. Treatment: moderate overhead watering at the beginning of the day, removing affected areas of geranium, treating plants with fungicides.

Geranium leaves are turning yellow. On the reverse side they are covered with brown color in a radial or V-shape. Then the entire leaf darkens, right down to its veins. The disease spreads to geranium stems . Causes of the disease: bacterial rot of the stem and leaves of geranium. Ways to treat the disease: removal of infected plants. It is necessary to avoid overhead watering, use well-ventilated soil for planting, and treat geraniums with fungicides.

The geranium's leaves turned yellow and some of them fell off. On the back of geranium leaves there are small yellow spots that spread out to the sides in concentric circles. Cause of the disease: fungal leaf rust. Treatment of the disease: isolate the geranium, remove damaged leaves, avoid overhead watering, treat the flower with fungicides.

Why do geranium leaves have small leaves and turn yellow? Reasons: insufficient nutrition or small pot volume. Perhaps the plant is old. Geraniums need to be renewed every 2 years. Otherwise, its leaves become smaller.

Geranium leaves are white, some of them acquire a matte color. They turn yellow and fade over time. The roots become soft, their shell is easily separated from the core. Causes: geranium root rot. Treatment of the disease: increase soil acidity and high soil moisture. The plant is not sprayed; it is watered rarely, but abundantly. It is necessary to isolate the geranium from other plants, replant it with removal of damaged roots, treat (spray and water) with Fitosporin-M, Alirin-B, Fitolavin and their analogues.

A healthy geranium, but the leaves dry out on it, before which they lose the intensity of their color and remain hanging on the stem. Brown spots are visible on the cut of its stem, but the root system remains healthy. Geranium disease: verticillium wilt. Treatment of the disease: the affected geranium is immediately destroyed along with the substrate where it grew. Other plants are treated with Alirin-B and analogues for prevention.

Why do geranium leaves turn yellow at the edges? Reasons: careless transplantation, excess moisture and lack of fertilizing.

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The plant has little green part

Geranium is not a whimsical plant, but despite this, it can react to improper care.

Why does this happen?

Many flower growers with extensive experience know firsthand that geraniums take on an unattractive appearance not only from various diseases, but also from improper maintenance.

Geranium is especially sensitive to a lack of light, so if it is placed in a shaded place, it will reach for the light.

This is what happens - the stems stretch out and there are very few leaves left on them. Very often, beginning flower growers observe this phenomenon in winter.

But you shouldn’t immediately throw the plant in the trash bin - the flower can and should be saved. It is enough to simply place the flowerpot in the sunlight, while pre-trimming the elongated shoots to the desired height.

In addition, the flower must be rotated periodically so that it is even and lush. If even after these manipulations, the plant stops growing and stops producing new leaves, then measures need to be taken.

What to do?

First of all, the plant is carefully examined for the presence of insects and diseases. If neither one nor the other could be identified, then it’s a matter of fertilizing and soil acidity. You can do this as follows:

Replant the plant by changing the soil. This should be done with special care so as not to damage the roots of the plant, otherwise it will take a very long time to recover.
Carry out constant feeding, and you can use not only purchased complexes, but also folk remedies. For example. When replanting, use egg shells as drainage.

Mistakes when caring for indoor geraniums

Illiterate care is the main reason for the appearance of yellow leaves in geraniums. This is an unpretentious plant to grow, but the basic rules for its development must be followed. Knowing the typical mistakes, it is easier to understand what your favorite indoor flower needs.

Wrong capacity

The choice of a pot for pelargonium must be approached very carefully. Some novice gardeners wrongly believe that the roots need a lot of space. But this is not suitable for all plants.

Indoor geranium in a tight container will quickly fill the entire space with roots and the growth of the plant will slow down. As a result, the leaves will begin to turn yellow and dry out. Using a very large flowerpot is also not an option. In a spacious pot, pelargonium will begin to intensively grow its root system, devoting all its strength to this process. For this reason, flowering will be delayed.

Over a large area there is a risk of moisture stagnation, which will lead to the development of rot.

Lack or excess lighting

Pelargonium is a light-loving flower. It is better to place it on a windowsill where there is enough light. In the shade, a yellow edging will form on the leaves and they will begin to dry out. But direct rays of the sun are also detrimental to pelargonium. They cause brown burns.

Watering too much

Indoor geranium is a drought-resistant species, this should be taken into account when caring. It is enough to water once a week. During hot summers, the frequency of moisturizing can be increased. The plant does not tolerate excess moisture. A characteristic sign is the appearance of yellowness on the foliage.

Lack of regular watering

Indoor geranium is capricious regarding watering. It does not tolerate a lack of moisture and does not respond well to waterlogging. You need to find a compromise: water the soil when it dries 2.5 cm. If this is difficult to monitor, then mulching the soil would be a good option. Pine bark, peat, crushed stone, tea, moss, and marble chips are suitable for this. The time between watering will increase, there will be no risk of rot spreading, and yellowing of the leaves will be prevented.

Incorrectly selected soil

In order for pelargonium roots to grow well, you need a special loose, fertile soil mixture. You can buy it in the store. Soil collected in the yard or forest may be unsuitable for indoor geraniums and will cause poor development and lack of flowering.

Increased air humidity

Not only the root system, but also the leaves are sensitive to excess water.

Do not spray the plant with a spray bottle. This will negatively affect the color of the greens; they may turn yellow.

Heat

Indoor geranium grows best at a temperature of +20 °C. High degrees cause yellowness on the leaves. This happens especially often in winter, when heating radiators strongly heat the air near the windowsill on which the plant stands. When it gets colder, the development of pelargonium slows down and flowering is delayed. She is preparing to die.

No fertilizer

Active growth and rapid flowering require good feeding. This requires iron, phosphorus, and potassium. Nutrients must be added regularly once a month. You can buy a universal mixture for indoor flowering plants with a low nitrogen content.

Herbicide ingress

When the leaves of indoor geraniums turn yellow and dry, there is a possibility that chemicals, such as weed control drugs, will come into contact with the plant. Pelargonium is sensitive to household household hygiene and cosmetic products - air fresheners, hair sprays.

Drafts

Indoor geraniums are often placed on window sills. Not surprisingly, this beautiful plant is always pleasing to the eye. But regular ventilation harms the appearance of pelargonium. The leaves begin to turn yellow and dry out, and gradually they all fall off. You can correct the situation by choosing a place without wind.

Poor or no drainage

To remove excess moisture from the root system, the pot must have a drainage layer. In its absence, the process of decay begins, which gradually destroys the entire plant. Its beginning can be determined by the leaves. They begin to turn yellow for no apparent reason.

Geranium pests

Pelargonium pests not only deplete the plant by drinking juices and eating individual parts, but also provoke the appearance of infectious diseases. In addition, they are able to spread quickly, infecting other plants. Let's find out how to deal with them.

Another answer to the question of why geranium leaves curl is infestation with aphids. The aphids drink the sap of the plant, weakening it. Infected leaves begin to curl and dry out. Parasites multiply quickly, and if measures are not taken, they can adhere to the entire plant. The fight against them involves removing the affected parts and treating them with Fitoverm or Mospilan.

Whitefly

These white midges are dangerous pests of geraniums. Royal varieties are most often affected. How to get rid of whiteflies?

Main diseases of geranium

Many people know pelargonium as a house flower, constantly blooming on windowsills, but there is also a garden type of these plants, which differs in the shape of the leaves and the size of the flowers. The home species is called ivy-leaved or ampelous. They decorate balconies, verandas and windows of houses. It has a pleasant smell that is barely noticeable in the fresh air. The number of varieties of zonal pelargonium is large.

On a note! In the garden you can often find a variegated variety of geranium. It is more resistant to frost and, in addition to the beauty of the flowers, pleases with the variegated color of the foliage.

Due to its specific aroma, it is widely used in the cosmetics industry. An aromatic oil is produced from the leaves. Plants require constant attention at any time of the year. After all, even during the dormant period, the possibility of infection by pathogenic microbes and various pests is quite high.

Yellowness on leaves

This occurs from a lack of oxygen in the room, the presence of constant drafts, overdrying or waterlogging of the soil, lack of nutrients and nitrogen. The size of the container in which pelargonium grows is also of great importance. If it is narrow, then the root system does not develop enough and this does not allow the above-ground part of the plant to grow normally. But if not only the leaves, but also other parts of the geranium. But if spots appear on geranium leaves for no apparent reason, you can be sure that the roots are infected with rot, or that a mealybug has appeared there.

Important! If the lower tier of leaves turns yellow on a recently transplanted geranium, this is not a sign of disease. You can simply remove them and the plant will continue to develop beautifully.

No flowering

The reasons for this may be lack of lighting, low temperature, improper feeding, too large a pot, or dense plantings. But sometimes this happens as a result of root rot or scale insects.

Dried leaves

These signs of pelargonium disease indicate that the soil is too wet, there are not enough nutrients, or fungal spores are developing.

Diseases and their treatment

Why do pelargonium leaves turn red? At home, the flower can grow in open ground in summer. It is often susceptible to fungal diseases, which causes the leaves to turn purple. It is necessary to urgently remove the infected areas and treat with Bordeaux mixture. This procedure must be done for a week.

In geraniums, white spots are a sign of a viral and fungal disease. The flower slows down in development and growth, the stem becomes bent, white stripes and yellow spots appear on the leaves. The plant is treated with fungicides.

Natural causes

Yellowness may appear for natural reasons; the flower sheds old leaves. It won't look very nice. The situation can be changed by pruning, which is best done in the spring. Simply cut off part of the stem and new green shoots will appear in its place.

Causes of the phenomenon and their elimination

Natural cause of leaf dieback

Most often, geranium leaves turn yellow and dry due to age. This is especially noticeable in zonal plants, the lower leaves of which from time to time turn yellow, dry out and die. You cannot prevent the natural biological process of leaf aging, so simply maintain the decorative appearance of geraniums by partially pruning the stem in the spring, at the beginning of active growth. The procedure will speed up the appearance of new foliage.

Conditions for keeping geraniums

The geranium plant does not like either cramped or spacious pots. The optimal container for it should be ceramic and have a diameter of 20-25 cm and a height of 12-15 cm. In plastic containers, geranium roots often rot, so vermiculite, perlite and well-washed river sand should be added to the universal soil for the plant: substrate for geranium should be loose.

The plant must be replanted carefully, since clumsy actions may cause the geranium to begin to lose its leaves. This flower does not like change at all; the slightest change in usual conditions can cause stress in it, which is expressed by yellowing and falling leaves. If you need to move the plant, do it gradually, moving it 2-3 cm every day, and yellow leaves may not appear.

Geranium loves direct sun, and this is its advantage over most indoor plants: it can be grown on southern windowsills. However, this plant also has a limit to its endurance, so in extreme heat, when the sun becomes destructive, shade the geranium from its rays in the afternoon, from 12 to 16 hours. If you do not do this, the fall of yellow, dry leaves will not take long to happen.

Leaves with dry edges and dark brown tips are a sign of low humidity in the room or that the plant's leaves are touching the glass. Place containers of water around the geranium and move the pot away from the window.

Geranium is thermophilic and tolerates heat well, but at the slightest draft it becomes covered with yellow leaves. The optimal temperature for the plant is 20-25 ºC in summer and 10-14 ºC in winter. When ventilating, make sure that the geranium does not fall under oncoming air currents. And keep the flower pot as far as possible from heating appliances in winter.

Violation of the watering regime

The health and beauty of geraniums greatly depend on the watering regime. Both a lack and an excess of moisture can cause irreparable harm to the plant. The condition of the leaves will tell you whether the watering regime is correct, and you can adjust it: the geranium turns yellow - the moisture was excessive; the geranium withers and dries - which means the plant lacks moisture. If the spots and spots on the leaves are dry, the plant is suffering from thirst, and if the spots are brown and wet, you have allowed the substrate to become waterlogged. Good drainage can temporarily protect geraniums from the effects of excess moisture in the soil, but if you water the flower incorrectly for a long time, problems cannot be avoided.

Try to water your geranium regularly. From spring to autumn, 2-3 waterings per week will be enough, and water consumption depends on the weather outside: when it rains, geraniums need less water, and when it’s hot, more. In prolonged heat and drought, you may have to moisten the substrate every other day. In winter, the plant is watered half as often. Water for irrigation should be at room temperature and soft, otherwise calcium will accumulate in the substrate, which will cause the upper leaves of the geranium to turn yellow. Let the water stand for 2 days and sometimes add a few drops of lemon juice to it. When watering, drops of water should not fall on the leaves.

Geranium nutrition problems

Geranium does not need frequent feeding, so from autumn to spring it is not fertilized, but from spring to autumn it is fed with potassium-phosphorus fertilizers. If the nitrogen component predominates in the complex, this can lead to yellowing of the leaves. As for the balance of elements, the lower and middle leaves of geraniums turn yellow due to a lack of nitrogen, potassium, phosphorus, magnesium and zinc. If there is a deficiency of boron, iron, copper, manganese, sulfur and calcium, then the upper leaves of the plant may turn yellow. Try to feed geranium with a balanced complex mineral fertilizer containing all the microelements it needs.

Pests and diseases of geranium

Geranium leaves can also turn yellow due to the presence of sucking pests on the plant - thrips , mealybugs , spider mites and whiteflies . If you find parasites at the very beginning of their colonization, you can deal with them quickly: if possible, it is enough to remove them from the geranium mechanically and treat the flower once with Actellik, Fitoferm or Aktara. But if the pests have managed to multiply, get ready for a long confrontation.

Particularly dangerous pests are spider mites, which can be detected by the thinnest web, when they have already given more than one generation. If you are patient and persistent, you can win this difficult battle, but if the mite does not go away, it is better to say goodbye to the geranium so that your other plants are not harmed.

Of the diseases that can affect geraniums, the most dangerous is a viral infection , from which growth slows down, the stems become bent, white stripes appear on the flowers, and yellow or light green dots and spots appear on the leaves. If you find such symptoms on your geranium, it is better to immediately destroy the plant before the virus spreads.

from bacterial rot , and then dry brown spots appear on the leaf blades. As the disease progresses, the entire leaf darkens and the disease spreads to the stem. Affected leaves must be removed and flower stalks cut off. If the substrate smells rotten, it is advisable to replant the plant in fresh soil, after first washing its roots in a weak solution of potassium permanganate or in a fungicide solution.

rust can cause considerable harm to geraniums , causing yellow spots and pads with spores to appear on the underside of the leaves. Then the leaves turn yellow and begin to fall off. They destroy rust pathogens with a fungicidal preparation.

When infected with botrytis, geranium leaves dry out and become covered with fluffy, radial or V-shaped spots. Diseased areas should be removed and the geranium should be treated with a fungicide solution. In the future, you need to adjust the watering of the plant.

If the geranium leaves first turn white, become dull, then turn yellow and wither, and the roots soften and split, then you are dealing with root rot . Isolate the flower from other plants, remove damaged areas of the root system, keep the roots in a solution of Fitosporin-M, Alirin-B, Fitolavin or their analogues and plant the geranium in a fresh substrate. Moisten the soil moderately and at first use a weak solution of the listed drugs.

Geranium is affected by another incurable disease - verticillium wilt . On an apparently healthy plant, the leaves begin to turn pale and dry, but do not fall off, but remain hanging on the stem. Brown spots are visible on the cut stem. To prevent the disease from spreading to other plants, the geranium must be immediately destroyed along with the substrate in which it grew. For preventative purposes, treat all your home flowers with Alirin-B or other drugs of similar effect.

Source

Prevention at home

Prevention will help prevent not only the appearance of yellow dry leaves, but also many other problems . In order for the plant to feel good, develop quickly and delight you with spectacular inflorescences every year, you must adhere to simple rules:

As can be seen from the above, preventing the appearance of dry leaves is simple. You need to follow the given tips and they will never appear.

How to prevent leaves from drying out

What to do to avoid leaves drying out? In order for your pelargonium to always remain beautiful and delightful with its appearance, you must comply with all the conditions for its maintenance. To prevent the leaf from drying out and turning yellow, you should remember simple rules.

In the period from March to August, which is the time of active growth of the plant, it is necessary to water the flower with the addition of fertilizers, preferably liquid ones, for indoor flowers (potassium fertilizers are suitable). If you neglect fertilizers, then during the spring-summer period the young leaves will not grow to their full potential and will be small.

An important factor for plant health is air humidity. But not in a positive way, but rather the opposite. Pelargonium does not like moisture on its leaves. Therefore, you should not leave the flower near plants that you regularly spray with water. With abundant contact with water, pelargonium leaves begin to rot. If you notice that something is wrong with the leaves and they are rotting, then try to avoid spraying the geranium.

Transfer. If there is a need for replanting, it is better to do this in the spring, since in the spring and until the end of summer the flower actively grows. It is also worth replanting geraniums every two years. Once a year you can replace the top layer of soil. It is necessary to monitor the size of the pot, because if it is too large, then the pelargonium will not bloom well, and otherwise, if the pot is a little too small, then the geranium will bloom better. Pelargonium can grow in almost any fertile soil. The best soil composition is: 1 part turf, 1 part sand and 1 part peat soil.

In general, it is worth saying that geranium, like any other indoor plant, with proper care will always please the eye. You don’t need to do anything special when caring for a flower, but you shouldn’t neglect care either.

Source

Why do the leaves of indoor geraniums turn yellow: the main reasons

Mistakes when planting and replanting plants

Lack of minerals

Improper care at home

What to do if geranium leaves turn yellow

Leaves and flowers fall

Causes of the phenomenon

What to do?

Preventive measures

Pelargonium: other diseases and care errors

The edges of geranium leaves dry out

Leaves curl inward

Treatment of diseases

Prevention

Other diseases: causes and solutions

—Categories

-Music

—Book lover

-I'm a photographer

Medicinal preparations for geranium

Pelargonium leaves turn yellow and dry: preventive measures

Lack of nutrients in the soil

Small leaves

Why does this happen?

How to solve a problem?

Excessive watering

What to do if they become small?

Sunburn

What to do if geranium leaves curl?

The appearance of pests

Stopping development due to pest infestation

Diseases

Why do they fall?

Natural causes

Why are there few of them?

Geranium diseases

She doesn't have enough light

Geranium flower - why do the leaves turn yellow? Other plant diseases

The plant has little green part

Why does this happen?

What to do?

Mistakes when caring for indoor geraniums

Wrong capacity

Lack or excess lighting

Watering too much

Lack of regular watering

Incorrectly selected soil

Increased air humidity

Heat

No fertilizer

Herbicide ingress

Drafts

Poor or no drainage

Geranium pests

Whitefly

Main diseases of geranium

Yellowness on leaves

No flowering

Dried leaves

Diseases and their treatment

Natural causes

Causes of the phenomenon and their elimination

Natural cause of leaf dieback

Conditions for keeping geraniums

Violation of the watering regime

Geranium nutrition problems

Pests and diseases of geranium

Prevention at home

How to prevent leaves from drying out