General information

Rust: treatment and prevention, control measures


There are a variety of diseases of indoor flowers, some of them complex, requiring a special approach to treatment and preventive measures in the future. Rust - a disease of indoor plants - a rare, but dangerous, able to destroy the flower. The name of this disease of flowers is explained by the appearance of the lesions: red and brown spots appear on the leaves of domestic plants, slightly protruding and woolly. Actually - this is a fungus. The treatment of home flowers affected by them is long and complex. It is imperative to review the conditions in which the plant is located, and the scheme of care.

Manifestation of the disease

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 are not confused or missed.

  1. First, there is rust on the leaves and on the stems of home flowers. It looks like yellow-brown or red-brown convex spots of various sizes and shapes.
  2. Spots grow in size, swell and form pustules. The leaves of diseased plants vigorously evaporate moisture, pustules dry quickly, crack and burst. “Rusty” powder is poured out of them, which poses a serious threat to neighboring healthy plants. These are spores of the fungus that quickly spread through the air throughout the flower garden.
  3. Then the spores completely cover the entire surface of the leaf and stems, appear on the flowers. Plants change color, become brown or brown.
  4. Then the indoor flowers begin to dry and lose the leaves, if you do not start treatment, the plants will die.

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

It is important to know: at a temperature 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.

Causes of

Rust is a fungal disease, and the fungus is known to like to settle there, de humid, warm and dark. From this we can conclude that rust on plants occurs when they are too often and abundantly watered, 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 fall into a state of rest until spring, they do not need frequent watering, as well as mineral dressings. If, in addition to this, the pot is near the battery, you should not be surprised at the appearance of such a plant disease.

Excessive watering of indoor plants can lead to rust.

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

If the pots of plants are on the open terrace, veranda or on the balcony, the spores of the fungus can be carried by the wind or insects. Sometimes come across seeds already contaminated with rust. Recognizing this is difficult, often impossible at all. This is one of the reasons why seeds should be treated with potassium permanganate before sowing. Like the tanks with the ground in which they will land.

Rust control measures on aster cultures are the same as on fruit crops: adherence to agricultural technology, timely care, preventive treatments and treatment with fungicidal solutions.

Rust cloves.

In the first half of summer, brown pustules covered with epidermis appear on the leaves and stems of rusty clove plants, which ripen and burst. Sick plants lag behind in growth and development, their leaves dry and die off, and in the fall you can see dark brown pustules of fungus that have passed into the winter stage.

Rust bulbous.

The causative agent of rust of tulips, hyacinths and lilies is the mushroom Uromyces scillarum. When infected, on the leaves of bulbous plants appear discolored areas with a diameter of up to 2 mm, which gradually turn yellow. On the inner scales of the bulbs and under the epidermis brown spores are formed. Affected leaves fall prematurely, the quality of flowering decreases, the plant looks depressed.

Cruciferous rust.

The fungal disease of cruciferous crops is called white rust and is caused by the fungus Albugo candida. This infection damages all terrestrial parts of the plant. The peak of disease activity occurs in the first months of the growing season, when the weather is cool. Sick areas become covered with white formations, and subsequently swell or bend due to spores of the fungus that form under the epidermis.

Fighting rust on cruciferous, complex flowers, cloves and bulbous crops is carried out by the same methods as on fruit trees or berry bushes.

Rust preparations (fungicides)

We offer you a description of the most effective antifungal agents in the fight against rust:

  • Abiga-Pik - a broad spectrum copper-containing fungicide used to combat a complex of bacterial and fungal diseases,
  • Azofos - fungicide of a new generation for the destruction of fungal microorganisms. Environmentally friendly product
  • Baktofit - a biological fungicide and bactericide, designed to combat fungal and bacterial plant diseases,
  • Bordeaux mixture - copper-containing fungicide of a broad spectrum of activity for protection of vegetable, fruit, berry, citrus, melon, decorative and flower crops from a complex of diseases,
  • Vectra - fungicide of contact-systemic, therapeutic and protective action, destroying spores of phytopathogenic fungi,
  • Cumulus - inorganic contact drug to combat fungal infections on plants,
  • Kuproksat - contact fungicide of preventive and eradicating action, designed to combat the complex fungal diseases,
  • Medex is an effective fungicidal agent created on the basis of copper sulphate and used to fight against fungal diseases of plants,
  • Penkozeb - contact fungicide of protective action, used for prophylactic treatment of plants from fungal infections,
  • Poliram is a highly effective drug of protective action, used for prophylactic purposes,
  • Skor - systemic fungicide with prolonged prophylactic and pronounced therapeutic effect, used to combat fungal diseases,
  • Strobe - a highly effective broad-spectrum fungicide to combat fruit, ornamental and vegetable plants,
  • Topaz is a systemic fungicide used to a greater extent for the prevention of fungal infections at the beginning of the growing season of plants,
  • Phytosporin is a biological fungicide of contact action, a microbiological preparation for protecting plants against a complex of bacterial and fungal diseases.

Folk remedies against rust

When choosing means to kill pathogens, preference should be given to those that are less dangerous to plants, people and animals. That is why many gardeners and gardeners try to use time-tested folk remedies instead of industrial fungicides for plant protection. Compositions prepared according to the following recipes are recommended for rust control:

  • 1 tablespoon of soda, 1 teaspoon of liquid dishwashing liquid, 1 tablespoon of vegetable oil, 1 dissolved aspirin pill into powder in 1 gallon of water (about 4 liters) - this composition should be sprayed with rust plants once a week,
  • One-third of a bucket of fresh manure is poured with water and infused for three days, stirring occasionally, after which the infusion is filtered through a cloth and then diluted with one part of the infusion with ten parts of water. Processing the fresh solution on the leaves is carried out only after sunset, otherwise the plants will burn,
  • half a bucket of shredded weeds is poured to the top with hot water, infused for several days, stirring occasionally, then filtered through gauze and used for evening processing of plants on the leaves.

What is dangerous rust?

Rusting plants not only spoil the appearance of the plant, but also destroy it from the inside. First, they attack the leaves, then move to the stems, flowers and fruits. As a result, the process of photosynthesis and metabolism is disturbed, the affected plant suffers moisture deficiency, which leads to leaf fall.

The loss of leaves prematurely undermines the immunity of the plants, they endure worse the winter, the quality and quantity of the crop decreases in fruit crops, and in ornamental plants the flowers become smaller and smaller, the plant looks depressed and slowly dies. Flour from affected cereals will not have the properties necessary for baking bread. Fungi causing this disease are carried by wind, through the air, with water, and this is especially dangerous.

Signs of defeat

It is easy to diagnose rust by external signs - it is enough to inspect the leaves, and if there are swellings on them like pads, crushing which causes rust powder, it means that the plant is affected.

Powder spilled - this is mushroom spores. If the disease has passed into a more advanced stage, then these swellings merge and form rusty stripes, the leaves turn yellow and fall off early. Usually spots are on the underside of the sheet. Sometimes the fungus affects not only the leafy plates, but also the stalks and stems, and the pads can take on a light yellow color and are located on the upper part of the leaf.

Risk group

This disease can affect a wide variety of plants:

  • grain crops - wheat, rye, barley, millet, oats,
  • most garden flowers are roses, peonies, irises, mallow, carnations, clematis,
  • ornamental deciduous and coniferous shrubs,
  • vegetables - cucumber, asparagus, carrots, beets, onions,
  • fruit trees and shrubs - red and black currants, pears, apples, raspberries, gooseberries.
Houseplants get sick less often, and, as a rule, infection occurs through untreated garden soil or in winter, from the needles of pine forest.

How to deal with rust on plants

The best method of dealing with this disease is prophylaxis. The earth around the plants should be dug up for the winter, the plants should be treated with fungicides in time, especially if the weather is wet and cold for a long time.

You also need to monitor planting density and thin them out in time, and in the fall, rake and burn all the fallen leaves, branches and fruits. But if the plant is still sick, then you should not immediately say goodbye to it - today there are a lot of methods to combat this “rusty” contagion. It can be both folk remedies and chemicals.

On fruit trees

Most of all, rust from fruit trees loves an apple tree and a pear, and from them it is thrown on cherries, plums, and apricots. Therefore, if you do not pay attention to it, you can lose the whole garden. If you have a suspicion about the presence of rust on the pear, you need to carefully examine how and what to treat it, and urgently to do it.

Fight against the fungus begins in the fall, removing the debris and digging the whole okolostvolny circle on the bayonet of the shovel. In the spring they inspect the tree, cut off the affected branches and burn it away from the site along with last year’s leaves. After that, prepare a 7% solution of urea or 10% solution of ammonium nitrate and treat the soil under a tree.

Next, it is important not to miss kidney swelling period, because at this time is spraying 3% Bordeaux liquid. In the interval from bud break up to budding, one or two more treatments with Azofos or Medex fungicides, or with any other preparations that contain copper or sulfur, are carried out.

The following treatments must be before and immediately after flowering, and when the fruits begin to grow. Usually, treatments are stopped 45–50 days before harvest. In any case, you must carefully follow the instructions. However, the rust of pear and there are popular control measures that will not harm human health, as well as birds and insects.

One of them is the treatment with an infusion of fresh cow manure, aged for three days. To do this, take 1/3 of the manure bucket and pour the rest with water, periodically mix it for three days, then filter through a piece of cloth.

One part of the slurry takes ten parts of the water and spray the trees in the evening. Repeat once every 10 days. This solution will also be a top dressing for wood, which significantly enhances its immunity.

Similar methods can be used against rust on apple leaves and for other inhabitants of your garden.

Rust on coniferous trees

Conifers are becoming an increasingly popular element of landscape design in gardens and parks, because gardeners think that they do not need special care. Meanwhile, they are the main carriers of rust fungi, which then hit and everything around. Therefore, even at the stage of purchase, it is important to inspect the plant well, to clarify with the seller whether it was processed. The needles on infected trees are covered with yellow-orange spots in early spring, and after the spore is released, the fungus darkens and the needles also acquire a rusty color. Most often, blue spruce, juniper, cedar and thuja are grown in gardens and parks.

The principle of dealing with the disease for all these plants is the same, so if you know how to treat, for example, juniper from rust, then you can cope with other plants.

If on some branches of juniper there are already obvious signs of a fungus, then these branches will have to be cut and burned.

Also, it is better to add a special adhesive or detergent to the solution, so that the preparation will stay on the branches longer. The fungus is capable of producing resistance to fungicides, and therefore they need to be changed every 1–2 treatments.

On the berry bushes

Most often rust fungi attack black and red currants, as well as gooseberries.

In these plants, rust is called gobletas the affected part of the leaf takes the form of a glass. Currant has a rather short period from the appearance of buds to the ripening of berries, therefore it is better not to use strong fungicides. However, the currant rind of the currant is quite well treatable, you just need to know how to deal with it correctly.

A good prevention is the same digging the soil around the bushes. It is necessary to pay attention: is there any sedge thickets nearby, as the fungus winters on it. If sedge is there - urgently mow and burn it. Shrubs are treated with 1% Bordeaux mixture three times: immediately after the appearance of the leaves, before flowering and after it.

You can also use a simple folk remedy: take 1 teaspoon of dishwashing detergent or adhesive, 1 tablespoon of any vegetable oil, 1 tablespoon of soda, pour it all with 4.5 liters of water and add aspirin pounded to powder. This solution can be sprayed bushes once every 10 days.

Not only trees and bushes, but also vegetable crops suffer from rust.

The main stages of dealing with it:

  • following a crop rotation - not planting plants prone to this disease, after each other,
  • thoroughly dig the ground for the winter, and in the spring to remove the remains of plants,
  • time to weed the beds,
  • process the seeds with a solution of potassium permanganate or furatsilina,
  • Do not place the beds of different vegetables close to each other.

At the first signs of damage, treatment will be suitable: a solution of ammonia (3 tablespoons per 10 liters of water) or water with tar soap. But if the disease is already progressing, then these funds will be ineffective. There can not do without fungicides or 1% Bordeaux liquid.

On cereals

To obtain a healthy harvest of grain, it is important to plow the land well and remove all weeds so that the mushrooms have no place to spend the winter. Also, the control methods include proper crop rotation, isolating winter crops from spring crops, warming the seeds in the sun or by the air-heat method. In large farms, grain is processed before sowing, so there the risk of crop damage is minimal. But at home, people usually do not. Since the sowed areas are usually quite large, unfortunately, it is not enough to do without folk methods, we have to use chemicals. Among them are such as "Atlant", "Altazol", "Altrum Super" and others.

On indoor plants

One of the causes of this disease in indoor plants can be waterlogging at low temperature indoors. Therefore, you need to monitor this, especially in autumn and spring, when it is damp outside, and it is cool in apartments. For the prevention of all diseases, it is necessary to feed their green households on time, since they have no place to take minerals, and in the pots the ground is quickly depleted. The fight against rust on the leaves of indoor plants is hampered by the fact that it is impossible to process them indoors with chemicals. Therefore, if the plant is sick, then you have to destroy it, and to prevent the healthy flowers from sprinkling with liquid ammonia or tar soap.

Если же вы живёте в частном доме и стоит тёплая погода, тогда можно попробовать больной экземпляр спасти — вынести растение на улицу, удалить все заражённые листья и побеги, а затем обработать одним из фунгицидов. Обработку нужно провести 2–3 раза с перерывом в 10 дней. Растение в дом всё это время не заносить.

Итак, ржавчина — заболевание опасное и требующее длительного лечения. However, you can get rid of it if you carry out the necessary preventive measures and closely monitor the condition of their green pets.

What does rust look like?

Plant rust is a dangerous disease that rust fungi cause. It affects both vegetable and ornamental crops. There are different types of rust, depending on the pathogen.

A characteristic sign of rust damage is the appearance of red-brown or reddish-brown pustules of various shapes. These formations are “dusty” - scattered with rusty powder, consisting of spores of mushrooms. Pustules are most often formed from the underside of the leaves, but can also appear on the upper part, as well as on the trunks and shoots. Gradually, the affected leaves turn yellow, then fall off.

Causes of defeat

Like many other fungal diseases, rust is activated at high humidity and the presence of water droplets on the leaves. If the plant remains wet for about 6-8 hours, there is a high risk of infection. Watering and rain spread fungus spores to neighboring plantings. Disputes are also easily carried by the wind.

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Basic description of the disease

Rust is a disease in which live tissue of plants, mainly leaves, is affected by the fungi of the subclass Heterobasidiomycetes. Rustins do not feed on dead organic matter, therefore, having sucked the sap from one plant, they proceed to the next. Often, rust is first found on the leaves of crops, if appropriate measures are not taken in time, this disease can destroy the entire plant.

Some types of rust are their entire life cycle on a single plant. They are called single-owner. Others parasitize at the same time on two plants, for which they are called raznozhozyasnymi. The latter represent the greatest danger.

This mushroom is so tenacious that it does not die, being transported by air or insects over long distances.

The number of disputes ripening at the same time reaches several tens of billions. For these reasons, the area of ​​capture by rust fungi is increasing at an incredible speed, and the foci of disease flare up in the most unexpected places.

The appearance of the affected plant

Rust can be affected by a wide variety of plants, ranging from wild plants to agricultural crops, for example:

  • cereals,
  • industrial crops,
  • ornamental plants
  • forest trees and shrubs,
  • meadow and field grasses.

A characteristic sign of the disease are clusters of orange or brown spores on the underside of the leaf and yellow oval or round spots on the top. Soon the spots turn into stripes, the leaves turn yellow, then brown or black, dry and fall off. This happens in connection with metabolic disorders and water balance, decrease in the energy of photosynthesizing processes.

If you find a variety of orange-yellow pustules on the leaves, know that after a while they will crack and spores will spill out of them, which people call rusty powder.

So, in the neglected case, the leaves and other parts of the plant (shoots, buds and flowers), the patient with rust, die. Accordingly, winter hardiness and yield, the quality of fruits, berries or vegetables are significantly reduced. All grain crops, affected by rust, lose the baking properties of the grain.

Types of disease

Consider the manifestation of rust disease on the example of some garden flowers.

  • Irises. Their leaves suffer from rust caused by Puccinia iridis. A huge amount of brown bubbles covers the surface. The leaves quickly turn yellow and dry. On the dead parts, by the autumn, black stripes are formed, indicating that the fungus hibernates and does not disappear.

  • Clove plants. In early summer, leaves and stems infected with the pathogen Uromyces caryophyllus become covered with brown pustules. After they have ripened and burst, the plant is inhibited, and the leaves wither. In the fall, the bubbles acquire a dark brown shade - a sign that the fungus has fallen asleep.
  • Bulbous plants. On leaves affected by the Uromyces scillarum rust pathogen, first appear small, colorless patches that turn yellow with time. Then brownish spores appear on the leaves and even on the scales. The fate of the leaves is the same as that of irises. However, the plant itself slows in growth and ceases to bloom magnificently.
  • Complicated. The spores of this fungus Coleosporium solidaginis are located on the lower surface of the leaves. Affected parts die out soon. In the fall, the harmful fungus overwinter in flat orange pustules.

  • Lilies of the valley. On the leaves of this flower infected with the fungus Puccinia, yellow spots of a rounded or oblong shape appear. On the reverse side, under these spots, whitish pustules of a cylindrical shape develop with time and with inwardly curved edges.
  • Cruciferous. All aboveground parts of plants of this family are damaged by white rust, and its causative agent is Albugo candidae. A large number of white spores swell and bend pads, as a result of the leaves curl and die.

Methods of struggle

Rust on the leaves of garden flowers (roses, stock roses, hydrangeas, lilies, lilies of the valley, irises, hyacinths, tulips, carnations, asters, chrysanthemums, left, gladioli, peonies) is a contagious disease that can and should be dealt with. There are many popular and chemical methods of destroying rust fungus.

It will be useful to read:

Chemical preparations (fungicides)

In the fight against rust, the most successfully used are 1 and 2 percent solutions of multifunctional contact and contact-local gray and copper-containing preparations, including:

  • "Flint old",
  • "Colloidal sulfur" (cumulus),
  • Bordeaux Liquid,
  • "Oxy"
  • "Falcon"
  • "Coronet",
  • "Chloride copper".

In rainy weather during processing with chemicals, it is necessary to add the so-called green soap or adhesive to the prepared solution. Its function is to fix the fungicide on the surface of the leaves.

It will be useful to read:


The following preventive measures are the best way to combat rust on the leaves.

  • When watering, make sure that water does not fall on the leaves.
  • As soon as you find the infected areas on the plant: leaves or branches - immediately destroy them or bury them deep into the soil.

  • Get rid of rust intermediate hosts, isolate crops or planting from diseased plants.
  • In the fall, it is imperative to remove fallen leaves and fruits, broken shoots.
  • Before starting sowing, deeply plow up the ground to destroy the malicious spores that hibernate in it.
  • Peel, sort, seed seeds with fungicides (this is especially useful to prevent rust on sunflower, flax and sugar beet).
  • Harvest cuttings and cuttings only from healthy bushes.
  • Apply potassium-phosphate fertilizers, nourish plants with trace elements.
  • Carry out early spring disinfecting treatment of the garden with fungicides.

  • Once the leaves have dissolved, repeat spraying with special chemicals twice a week. So you can prevent the rust of fruit bushes (gooseberries and currants) and trees (apple and pear), as well as conifers: pine and spruce.
  • Separate varieties resistant to different types of rust fungi.
  • Plant around the perimeter of the site bushes with a dense crown to eliminate the possibility of spread of infected spores from a neighboring site or from a nearby forest.
  • You should not purchase plots near pine forests.
  • Carry out weeding regularly, as they may be carriers of rust.

Rust is a very serious disease. In order not to start it, inspect the plants more often, because the disease found at an early stage is much easier to cure. Do not hesitate with the measures of struggle - "then" it may be too late. And most importantly, keep in mind preventive procedures to protect your garden and garden against harmful microorganisms and not to use chemicals.


Affected cereals, industrial crops, ornamental plants, forest trees and shrubs, wild herbs. The causative agents of plant Rust develop on aboveground parts of plants, feed on the contents of only living cells, and spread by spores.

In diseased plants, the metabolism and water balance are disturbed, the energy of photosynthesis decreases, the growth decreases. Plant rust affects the quality of fruits and seeds, the baking properties of wheat and rye.

The most harmful rust: linear cereals (Puccinia graminis pathogen), brown wheat (P. triticina, intermediate plants - basil and leschitsa), brown rye (P. dispersa, intermediate plants — crooked and blush), yellow cereals (P. striiformis), dwarf barley ( P. hordei, intermediate plant - poultry lamb), crown oats (P. coronifera, intermediate plant - buckthorn), corn (P. sorghi, intermediate plant - oxalis), sunflower (P. helianthi), flax (Melampsora liniusitatissimi), sugar beet (Uromyces betae), raspberries (Phragmidium rubi), pears, apple trees (pathogen Gymnosporangium sabinae, intermediate plant - usually Northern juniper), goblet or columnar gooseberry and currant (pathogens respectively Puccinia ribesii caricis, Cronatrium ribicola, intermediate plants - sedge, Siberian cedar pine or Maymouth pine). Bubble rust of pine (grayberry), needles of larch and birch leaves (Melampsoridium betulae), spruce needles (Chrysomyxa ledi or abietis), pine needles (pathogens are species of the fungi Coleosporium) can cause significant damage to tree species.