Why does a white rim appear on the leaves? Black coating on leaves - how to treat? What is powdery mildew

Many gardeners complain that petunia leaves become covered with a white coating. Why is this happening. Let's try to figure it out in this article.

Petunia leaves become covered with a white coating for several reasons. In this article we will look at the main causes of this unpleasant phenomenon.

White plaque is not a very good symptom. It indicates petunia disease.

If the petunia leaves are covered with a white coating, then most likely it is powdery mildew. It could also be downy mildew.

How to distinguish powdery mildew from downy mildew?

Powdery mildew is one of the most common diseases of plants, including petunias. This disease is fungal. It manifests itself in a white coating on leaves, stems and flowers. If no measures are taken, the plant will dry out and die. The following factors lead to the occurrence of powdery mildew:

• High air humidity.
• Large temperature changes.
• Lack of nutrients.

Downy mildew manifests itself practically. In order to distinguish downy mildew from real powdery mildew, you should pay attention to plaque spots. Also, true powdery mildew seems to suffocate the entire plant, and downy mildew affects the green parts of the plant. Downy mildew has a very characteristic “fluffy” white coating.

You can also distinguish by conditions. Powdery mildew appears in conditions of high humidity, and downy mildew appears in conditions of lack of moisture.

Fighting powdery mildew on petunia: what to do?

If you determine that your flowers are covered with a white coating due to powdery mildew, then the following remedies are perfect for the fight:

• Fundazol;
• Topaz;
• Acrobat MC;
• Previkur;
• Speed;
• Vitaros;
• Amistarextra.
• Fitosporin.

These drugs help quite well with powdery mildew. Follow the instructions on the package.

Control of downy mildew on petunia.

If the petunia leaves are covered with a white coating due to downy mildew, then the following remedies can be used:

• Solution of iodine and milk. (Drop 10 drops of iodine into 1 liter of milk and mix in 10 liters of water. Spray petunia with this solution). This product helps very well.
• Polycarbacin.
• Copper oxychloride.

All these products can be easily purchased at a gardening store. They help a lot and the white coating will disappear very quickly.

Help! In September I bought a violet, which bloomed safely until January, but at the beginning of February the young leaves of the violet became covered with strange spots. At the same time, the leaves did not lose their elasticity. What it is? How to treat?

As a rule, spots on violet leaves are not a disease, but a reaction of the flower to environmental influences.

MAIN REASONS FOR THE APPEARANCE OF STAINS ON VIOLET LEAVES:

1. Sunburn of leaves
2. Negative effects of cold air flows on sheet plates
3. Cold water is used for irrigation
4. Chemical burn of roots

Daylight hours in February increased noticeably, and the leaves, not accustomed to such bright light, received sunburn. It is not for nothing that the author of the question writes that only young leaves that grew in December-January are affected by spots. The appearance, of course, suffered, but this does not affect the health of the plant in any way.

To avoid the appearance of sun marks in the future, we recommend gradually accustoming your Saintpaulia to sunlight.

In winter, similar spots appear on violets for another reason. For example, if in a room where it is quite dry and hot, the window was open. A blast of cold air sometimes leaves similar marks on the leaves.

Often, when watering a violet with cold water, the leaves become covered with brown spots.

And finally, this may be due to the gardener being overly enthusiastic about feeding. We recommend that you avoid using any fertilizers for a while and water the flower from above with a syringe. If the number of marks increases, replace the potting soil.

The money tree (or crassula) is considered a completely unpretentious plant with strong immunity. But Crassula can suffer from pests and diseases due to unscrupulous care. Any ailment can be cured without much expense if it is detected at an early stage, identified by the signals that the plant gives. One of the common signs is that leaves are falling off.

Who is Crassula

Crassula (crassula) was born in South Africa, and received its name due to its thick and fleshy foliage. It has many varieties and is propagated in two ways: seeds and cuttings.

It is believed that this plant is able to purify the air in the room where it grows, as well as bring prosperity and material wealth to the house. Crassula is called the money tree and is classified as a talisman plant.

Water the fat plant a couple of times a week if the days are hot, and at a temperature of 18–23°C, one watering is enough. In autumn and winter, it is better not to keep Crassula near heating devices, despite its tolerance to dry air.

Feed the fat woman no more than twice a month in the summer and once a month in the winter. The ideal fertilizer for this plant would be one that is suitable for cacti and succulents (only in a dosage reduced by half). Any fertilizing is applied to moist soil.

You can’t replant the fat plant too often. This should be done as a last resort, when the root system of the plant has already filled the pot. This usually happens once every three years. A mixture for cacti is suitable as soil for the Crassula. You need to take a shallow pot and put a drainage layer on the bottom.

Video: caring for a fat woman

Diagnosis of ailments

Under unfavorable conditions and inattentive care, Crassula is affected by diseases.

Table: causes of money tree ailments

Photo gallery: symptoms of illness

Withering of the Crassula trunk can occur due to its death when flooded. Drying of the soil provokes the appearance of dry brown spots on the foliage. Excessive watering leads to rotting of the stem. Sunburn can easily be confused with a disease. Softening of foliage and branches can occur when the root system rots. If you mercilessly flood Crassula, then it will develop the leaves will turn yellow and fall off Black spots on the Crassula may be a sign of a fungus Increased humidity in the soil and air encourages the Crassula to evaporate water through the leaf pores Bacteria on the leaves of the Crassula leave traces as if they are gradually conquering the plant’s territory

Treatment of Crassula

In almost all cases of malaise, the plant can be saved. It is important not to let the situation get worse and take the necessary measures on time.

The plant turns yellow and drops its leaves

One of the most common problems faced by a gardener growing Crassula is leaf loss. There may be several reasons for this. The main one is improper watering.

Irrigation with cold water can destroy the plant. Problems can arise due to differences between air and soil temperatures. Dampness in cold conditions provokes not only the falling of leaves, but also the appearance of mold and the proliferation of fungi, so you need to water the plants with warm, settled water, always taking into account the temperature of the environment.

Improper watering of the plant can lead to loss of foliage

The stem stretches out

When there is not enough light, the plant suffers from a lack of nutrition, because it receives it not only through the soil, assimilated by the roots, but also through the leaves, through photosynthesis. As a result, when there is little lighting, and the fat plant receives watering in the normal amount, the body’s growth accelerates, but the plant does not have time to develop and stretches with all its might upward, towards the light source. Therefore, to form a beautiful bush, you need to place the plant in a well-lit place. But we must not forget that shading from direct sunlight is required.

Lack of light with abundant watering will unsightly stretch the trunk of the Crassula

Crassula grows slowly

This problem does not have a clear solution. If the development of the fat plant is too slow, you need to think about the correct mode of watering, lighting and fertilizing. During the dormant period, the plant must be provided with proper conditions.

The trunk rots, the leaves become soft or wrinkled

These symptoms are caused by too much water in the soil. The first step is to dry the soil well. You may have to transplant the fat plant into new soil. However, you need to be prepared for the fact that the plant will not be able to recover. Then the solution would be to propagate Crassula using healthy cuttings.

Crassula leaves wrinkle due to heavy flooding after drought

If the fat woman has been sitting on a lighted window for a long time without watering, then you should not immediately rush to water it. The fact is that the roots of the plant, without moisture, shriveled and dried out, and after newly received water they will begin to straighten out. If you give them more moisture than they can absorb in this state, the roots will crack and may rot in a new environment that is too damp. It is not surprising that the leaves of a flooded flower become wrinkled after suffering from drought.

Black spots appear on the leaves

Gardeners often confuse bacterial spot with sunburn. It is easy to distinguish these spots if you understand the nature of their occurrence. The burn always occurs locally, that is, in the place where the beam was directed, and does not spread in any way after the sun exposure disappears. Dark spots resulting from a bacterial infection gradually invade the leaf blade.

For treatment against bacteria and fungi, it is very effective to use the drug Fitosporin-M. One part of the substance is thoroughly dissolved in two parts of water, and then the resulting mixture is diluted again with water 10 times and the fat plant is treated with this solution on the foliage.

The plant is lethargic, its parts are drying out

A wilting plant may indicate that the roots are already cramped in the pot. This means it's time to replant the Crassula. It is better to do this in the spring. Of course, if the plant is sick and is in danger of dying, then you cannot wait. In addition, a drying plant signals an incorrect watering regime - excessive or insufficient.

The leaves are turning red

A change in leaf color from green to reddish is a reason to shade the fat plant from the sun's rays. The foliage also acquires this shade when there is a lack of fresh air (then the room needs to be ventilated daily) and a deficiency of nutrients.

Excess light and lack of fresh air leads to reddening of the leaves.

The roots darken and rot

If the malaise of the fat plant is detected and it is caused by rotting of the roots, then saving it, when the trunk of the money tree has not yet had time to blacken and rot, can only be done by replanting after treating the root system. To do this, you need to remove the plant from the pot, thoroughly rinse the roots under warm running water, and then, after carefully examining the shoots, remove the damaged areas. After the plant has only healthy roots left, dip them in a light crimson solution of potassium permanganate for 15–20 minutes to disinfect.

To avoid the development of bacterial infection and fungus, which could also cause the root system to become diseased, it is recommended to plant Crassula only in treated and disinfected soil and pot. To do this, the earth is calcined in the oven for an hour at 200 o C, and the pot is doused with boiling water, steam, or rinsed with a steep manganese solution or a 20% bleach solution.

White dots or silvery coating appeared on the leaves

Light dots indicate that the plant is oversaturated with water. In this case, it is necessary to dry the soil by reducing watering. A silvery coating is a sign that the plant has experienced stress and is now recovering. There is no need to take any measures other than proper care.

A silvery coating on Crassula leaves indicates recovery from stress.

Why does the fat woman get sick and how to deal with it

There are also dangers arising from the activity of fungi or bacteria that love dampness and cold. Plants with weak immunity are especially susceptible to them.

Crassula fungus infection

The most common causes of illness in the fat woman are fungi and bacteria. Their appearance can be provoked by an excess or lack of air or soil moisture, air temperature or lighting.

The most vulnerable period of time for Crassula is winter, when daylight hours are short. In addition, there are constant temperature changes in houses due to the low temperature outside the window in combination with the operation of the heating system.

Crassula can be affected by wet rot or gray rot, the occurrence of which is provoked by fungi. In this case, brown spots appear on plant tissues, increasing over time and eventually covering the entire plant. It is necessary to transplant Crassula into new soil in time or root healthy cuttings (when the disease is not yet in an advanced stage). Otherwise, the rot will quickly spread throughout the entire bush and the plant will die.

The process of spreading putrefactive lesions can be stopped by sharply reducing watering and increasing ventilation. The affected areas of the bush are cut off, and the wounds are disinfected with potassium permanganate, brilliant green or an alcohol solution. After processing, the sections are powdered with ash or crushed coal.

Crassula infection by bacteria

Identifying a bacterial infection of Crassula is very problematic, since the external symptoms of the disease are practically indistinguishable from fungal ones.

Rot caused by bacteria can be treated with fungicides. A series of antibiotic foliar treatments are then carried out using penicillin or gentamicin. Penicillin does not have a toxic effect on plants even in severe doses. Therefore, you don’t have to be afraid of killing the fat woman, especially since injections will be the most effective help for it, and it’s better to turn to specialists with this question.

Insect pests

The scale insect is quite easy to detect: light brown tubercles or spots with a yellow tint can be seen on the surface of the leaf and stem.

It's not difficult to fight her. Insects are collected by hand, and then the plant is treated with a soap solution or Fitoverm. This bio-product must be used according to the instructions; it is safe for humans and plants, but extremely effective against plant pests.

The scale insect on the Crassula leaves clear signs of its presence

Spider mites are very small insects that cause enormous damage to the plant. Despite its small size, the tick can be seen with the naked eye. It looks like a small gray or red dot that is in constant motion. A clear manifestation of a mite attack is a cobweb enveloping the leaves of the fat plant, as well as yellowing or browning of the leaves.

Spider mites leave visible marks on the occupied plant

If you find a tick on the Crassula, you should immediately spray the plant and immediately put a bag on the Crassula, tightening it on the pot. In conditions of high humidity, the tick will die. Other means to combat the pest are a soap solution or the Apollo preparation.

This is a fairly frequent visitor to the Crassula. It likes to be located on the roots and in the axils of leaves, feeding on plant tissues and gradually weakening the bush’s immunity. In addition, it spoils the appearance of Crassula, covering the greens with powdery secretions that resemble cotton wool.

The mealybug on the Crassula is visible to the naked eye

The scale insect is easily washed off the foliage with a stream of water. After getting rid of insects, Crassula is treated with a cotton swab dipped in an alcohol solution or garlic infusion. The drugs Fufanon and Actellik also cope well with the pest.

The root bug settles on the roots of the fat plant. It's not easy to find him there. This usually happens during the spring transfer of the plant to another pot.

If a scale insect attacks, you should wash the roots of the plant under running water (temperature 50°C), and then treat the root bundle in a solution of Fufanon or Actellik (twice with an interval of 7–8 days).

The root bug unfolds its activity inside the root system

What to do to revive Crassula

The most common problem in keeping Crassula is trunk rot. Having received a beautiful mini-tree with fleshy foliage, the beginner, apparently, succumbs to the false impression that such greenery must be fed intensively, and begins to mercilessly flood the Crassula.

Meanwhile, if the soil in which the crassula grows is not allowed to dry out, excess moisture at the root collar will cause tissue rotting and the stem will separate from the roots. In this case, it is impossible to revive the plant.

The plant can only be saved by rooting cuttings. To do this, you need to perform a certain algorithm of actions.

1. The plant must be carefully examined and healthy cuttings of at least 10–12 cm must be selected.
2. The selected cuttings are carefully separated from the mother plant and left to lie at room temperature for a day to wither.
3. The branches are rooted in water. First, their trunk is exposed, cleared of leaves. Cuttings standing in water should not be in bright sun; they will be more comfortable in partial shade. By the third week, the plants will be ready to move into a separate pot.
4. To transplant a rooted branch into a pot, you should prepare the container: wash the pots in hot water and soap, and then disinfect them in a strong solution of potassium permanganate. The container should not be large, as it is a transfer point for the cuttings.
5. A 7-8 cm drainage layer of expanded clay is laid on the bottom of the pot, and half the container is filled on top with a mixture of equal parts of river sand and turf soil.
6. Using a pencil, make a 2-3 cm hole in the pot with soil, where the cutting is carefully placed.
7. Not reaching the edge of the pot 2 cm, add the remaining soil mixture.
8. The cuttings are watered with settled water at room temperature. Each subsequent moistening is carried out only after the earthen clod has dried.
9. A young plant cannot be moved to another place until it is completely rooted in the soil and finally transplanted.

Video: how to make Crassula bloom

There has long been a stereotype that the fat plant is one of the most unpretentious plants. Despite the resistance of Crassula to many factors, it can fall ill due to the simple inattention of the grower. Timely measures taken will save the plant.

There are a variety of diseases of indoor flowers, some of them are complex, requiring a special approach to treatment and preventive measures in the future. Rust is a disease of indoor plants - rare, but dangerous, capable of destroying a flower. The name of this flower disease is explained by the appearance of the lesions: red and brown spots appear on the leaves of houseplants, slightly convex and as if fleecy. In fact, it is a fungus. Treatment of domestic flowers affected by it is long and complex. It is imperative to reconsider the conditions in which the plant is located and the care regimen.

A ficus completely infected with rust is very difficult to cure.

It is not so difficult to recognize rust on plants; the signs of this disease are specific, they cannot be confused or missed.

1. First, rust appears on the leaves and stems of domestic flowers. It looks like yellow-brown or red-brown convex spots of various sizes and shapes.
2. The spots increase in size, swell and form pustules. The leaves of diseased plants intensively evaporate moisture, the pustules quickly dry out, crack and burst. They release a “rusty” powder, which poses a serious threat to neighboring healthy plants. These are fungal spores that quickly spread through the air throughout the flower garden.
3. Then the spores completely cover the entire surface of the leaves and stems and appear on the flowers. Plants change color, becoming brown or brown.
4. Then indoor flowers begin to dry out and lose leaves; if treatment is not started, the plants will die.

However, even if you start taking measures, it is not always possible to save indoor plants from disease. Therefore, it is better to prevent its appearance and development.

It is important to know: at temperatures not exceeding 10 degrees above zero, the incubation period of the disease lasts up to 20 days. If the temperature is above 18 degrees, then the incubation period is reduced to 7-14 days.

Reasons for appearance

Rust is a fungal disease, and the fungus, as you know, likes to settle in places where it is humid, warm and dark. From this we can conclude that rust appears on plants if they are watered too often and abundantly, not ventilated and kept in the shade, away from direct sunlight or phytolamps.

It is especially dangerous to flood indoor plants with water in winter. Many flowers in the cold season go into a dormant state until spring; they do not need frequent watering, nor do they need mineral fertilizing. If, in addition to this, the pot is located near the radiator, you should not be surprised at the appearance of such a plant disease.

Over-watering indoor plants can lead to rust infection.

Also, the development of fungus can be provoked by the abuse of mineral fertilizers rich in nitrogen. In winter they are not needed at all. And during the growing season and flowering of plants, you should strictly follow the instructions and do not apply too high a concentration of fertilizer.

If pots with plants are placed on an open terrace, veranda or balcony, then fungal spores can be carried by the wind or insects. Sometimes you come across seeds that are already infected with rust. Recognizing this is difficult, often completely impossible. This is one of the reasons why seeds should be treated with potassium permanganate before sowing. As well as the containers with soil in which they will be planted.

Which indoor plants suffer more often than others?

In principle, rust can appear on any type of indoor plant. But the fungus loves certain varieties more than others. In addition, there are house flowers that are more sensitive to fungal spores and are unable to fight it. The following ornamental crops should be protected from moisture and overheating with special care:

• camellia;
• fuchsia;
• carnation;
• cyclamen;
• pelargonium;
• rose;
• geranium;
• chrysanthemum.

A cameo leaf damaged by rust cannot be treated.

This fungus likes to settle on garden crops such as asparagus and citrus bushes, and often affects palm trees of various types.

We treat and prevent disease

In most cases, a flower garden suffers from rust due to the fault of the owners themselves - this means that they do not properly care for their plants. To prevent the formation and spread of fungus in the spring, all flowers should be treated with a one percent solution of Bordeaux mixture.

What to do if a fungus has settled on the plant and its leaves begin to rust? First of all, it is important to prevent infection of neighboring plants, even if the diseased flower cannot be saved. Therefore, a sick flower must be immediately taken to a hotel room. Every single one of the affected leaves is torn off, even if there are only a few small spots of rust on them. Then they need to be burned away from the flower garden.

Bordeaux mixture is used to combat rust on indoor and garden plants.

The flower itself can be treated with the same Bordeaux mixture. Or use sulfur dust. You can also prepare the following disinfectant mixture yourself:

• heat 5 liters of purified water;
• dissolve 200 g of green soap in water;
• add 15 g of copper sulfate.

The room in which the potted plant is located must be well ventilated several times a day, and it is better to keep the window constantly open. Neither dry air nor high humidity should be allowed.

It is important to water the plant correctly. The liquid should be added to the pan or to the soil, but so that the water gets under the root and not on the leaves and flowers of the plant. If fertilizing is used, then preference should be given to preparations containing potassium and phosphorus.

Copper sulfate is a component of a spray preparation that you can prepare yourself.

Beginning gardeners often confuse rust with any red spots on the leaves of plants and begin to spray the flower garden with various fungicides. As a result, many plants die from improperly applied products. Therefore, if you suspect that a plant has been damaged by a fungus, you should either familiarize yourself with high-quality photos of the symptoms and manifestations of the disease, or invite a knowledgeable person to examine the plants and make a diagnosis.

Rust can also manifest itself differently in different flowers and crops. On some flowers it develops faster, on others it grows very slowly, over weeks or months. In any case, the plant needs to be treated; the most important points in this process are ensuring a constant flow of fresh air and removing the affected parts of the flower. It is recommended to re-treat with a disinfectant solution 10-12 days after the first spraying.

Sooner or later, they encounter problems associated with the deterioration of the health and decorative value of potted flowers. If there are spots on leaves of one or another species from your flower collection, it is necessary to determine the cause of damage to the leaf blades as soon as possible.

It is possible that the appearance of spots on the leaves is caused by sunburn and it is necessary to shade the flower from direct sunlight. Typically, such damage appears in the summer - yellowish or brown round spots are clearly visible on the leaves, the leaf blade is deformed, and turgor decreases.

But spots on the leaves may appear due to damage to the indoor plant pests(spider mites, flower thrips, scale insects, whitefly larvae, mealybugs, white or green aphids), fungal diseases(mycoses are caused by powdery mildew, gray mold, late blight, fusarium, anthracnose), bacterial diseases(bacteriosis), as well as viral infections, causing leaf spot.

Usually, novice gardeners are faced with damage to plants by pests or diseases, who commit violations in the process of caring for “green pets” at home. Therefore, it is important to carefully inspect all potted flowers as often as possible in order to quickly take action if spots are detected on the leaves. It is much easier to fight pests and diseases at the initial stage of their appearance than after significant areas have been affected, when the chances of saving the plant become less and less.

♦ WHY DO BLACK SPOTS APPEAR ON THE LEAVES OF FLOWERS?

◉ fungal disease phyllostictosis (brown spot). At the initial stage of the lesion, dark purple and black dots appear. Gradually, the dots increase in size and turn into brown or black spots on the leaves;

◉ fungal disease septoria. At first, you can find small oval spots of light gray color with a brownish border on the leaves. Gradually, the affected areas of the leaves increase in size and black spots appear in the central part, consisting of spores of the Septoria fungus. Then the mycelium spreads throughout the drying leaf and the color of the leaf blade becomes brown;

◉ fungal disease powdery mildew. At the initial stage of the disease, small spots with a grayish coating appear. The mycelium quickly expands, small spots merge, darken, and black spots with spores may appear closer to the center of the leaf blade;

◉ sooty fungus. Blackheads often appear on the secretions (honeydew) of pests such as aphids, mealybugs, scale insects, and thrips. Sticky honeydew remains on the leaves, and then a black coating and small dark or black spots appear;

◉ another dangerous mycosis is black rot. At first, dark brown spots with yellowish concentric rings may appear. Gradually, the spots increase in size, darken and the entire leaf literally turns black;

◉ bacteriosis bacterial rot. Most often appears on the fleshy leaves of indoor plants. At the initial stage of the disease, small spots of brown or black color can be detected. Gradually, the leaf tissue softens and areas of the leaf blade become necrosis.

Photo: black spots on the leaves of indoor plants

♦ WHY DO YELLOW SPOTS APPEAR ON FLOWER LEAVES?

❂ improper care of the plant (watering with cold water, overflowing and stagnation of water in the root system, incorrect fertilizing, inappropriate soil mixture). At first, shapeless yellow spots may appear on the lower leaves, yellowish dots along the veins. Due to waterlogging or stagnation of water in the roots, blurry yellowish spots appear on thin leaf blades;

❂ drafts and prolonged ventilation of the room. So-called draft spots may appear on flower leaves due to overcooling of the root rosette. Yellow spots of irregular or blurred shape are scattered throughout the leaf blade;

❂ sunburn. Sunburn can occur after watering or spraying when the droplets on the leaves act like lenses. Round or oval yellow spots with a reddish-brown rim are noticeable on the leaves;

❂ fungal disease peronosporosis (downy mildew). Grayish-yellow spots with a blurred outline appear on the upper side of the leaf blade. The mycelium quickly increases in size and the spots merge;

❂ bacteriosis bacterial spotting. First, glassy spots with a blurry rim appear. Soon these spots on the leaves turn yellow, and then increase in size, turn black and the leaf dries;

❂ pests of indoor plants suck juices from tissues. At first, you may notice small yellowish dots on the leaves. Gradually, the pests multiply, there are more and more spots and they increase in size, turning into yellow spots.

- photo: yellow spots on the leaves of indoor plants

♦ WHY DO WHITE SPOTS APPEAR ON THE LEAVES OF FLOWERS?

◎ fungal disease powdery mildew. First, a grayish coating appears, which is easily removed mechanically. Then the entire leaf is covered with shapeless white spots, which over time become dark brown or brown;

◎ fungal disease gray rot. In the initial stage, it usually appears on damaged and withered leaves in the form of shapeless brownish or brown spots. But after some time, white spots can be detected - this is a coating under which the color of the spots is rusty or brown;

◎ plant damage by thrips. The areas of the leaf blade affected by pests become covered with white spots. If you look closely, you can also find tiny black thrips excrement there.

- photo: white spots on the leaves of indoor plants

♦ SPOTS ON LEAVES IN DIFFERENT TYPES OF FLOWERS:

⊛ Anthurium. Irregularities in the watering regime lead to the appearance of yellow or rusty spots on the leaves. An improperly prepared soil mixture that decomposes and cakes can lead to the appearance of blurry yellow spots, and the leaves themselves are deformed. Anthracnose often affects Anthurium Andre (Male Happiness), which leads to the appearance of dark spots and drying out of the leaves. Frequent drafts and low temperatures lead to the appearance of black dots and small spots. Small translucent dark spots on the leaf blade indicate possible damage to the anthurium by spider mites. And numerous yellowish spots against the background of deformed leaves may be the result of the activity of aphids sucking out the anthurium juices.

⊛ Orchid(phalaenopsis, dendrobium). If dry spots of a brownish or brown color appear on the leaves, then most likely this is an infection with the fungus Cladosporium Orchideorum. If you constantly water an orchid with cold water, you can provoke the appearance of uneven depressed yellow spots - this is the so-called death of leaf tissue cells (Mesophyll collapse). With high levels of air humidity and elevated temperatures, circles and yellow spots of Cercospora bacterial spot may appear on the leaves. The fungus Phyllostictina Pyriformis causes small yellow and black spots to appear on the top of the leaf - and especially along the edges. The appearance of black spots of different sizes can cause chlorosis if you water the orchid with unsettled running water.

⊛ Ficus(Benjamina, rubbery elastica). The upper part of the leaf blade is covered with small yellowish and dark spots, a cobweb is visible between the shoots and leaves - this is a spider mite attack. Sticky secretions of pests (scale insects, thrips, mealybugs) can provoke the appearance of sooty fungus on the leaves. Gray rot causes darkening of the leaves and the appearance of spots with a grayish coating on the surface. Ficus plants are often affected by powdery mildew, when white spots with plaque appear on the leaves.

⊛ Saintpaulia(Usambara violets). They are very susceptible to direct sunlight, with prolonged exposure to which burns appear on the leaves in the form of yellow oval spots with a brownish central part. Cold air and constant drafts provoke the appearance of gray-beige spots of various shapes. Dark spots may appear along the edges of the lower leaves of violets if the plant has not been replanted for a long time or the flower lacks potassium. Powdery mildew causes white spots with a powdery coating to appear, and then the leaves turn brown, become deformed and fall off.

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