Diseases of peonies: methods of treating diseases, prevention and control of pests

Peonies are amazing perennials that, during flowering, become a real decoration of the garden plot. Plants are not susceptible to diseases, however, improper flower care can cause the development of pathologies. It is important to systematically inspect ornamental bushes. If peonies are affected by one or another ailment, rescue measures should be taken and the plantings should be processed.

Symptoms indicating that the plant is sick

Diseases of peonies often cause the death of bushes. That is why it is important to pay attention to flowers in order to take timely measures in case of a disease. The presence of brown and red spots on the leaf plates or on the edges of the green mass indicates the defeat of the peonies by a fungal infection. If a white bloom forms at the top of the leaves, this indicates that the perennial has suffered from powdery mildew.

Affected perennial bush

Gray rot, which leads to the death of the plant, can be recognized at an early stage, when the young shoots of the crop begin to wither. Gradually, grayish formations, which are observed on any organ of culture, will be added to the symptoms. Also, brown spots, concentrated around the peduncles in the area of the root collar, testify to the disease. Curly foliage may occur.

Note! A viral ailment is manifested by spotting, light stripes and the appearance of necrotic blotches.

Often, viral diseases affect the plant against the background:

neighborhoods with diseased vegetable and fruit crops;
contact with garden tools that came into contact with diseased bushes;
contact with contaminated soil;
invasion of parasites.

Why don't peonies buds bloom? Often the cause of trouble is the frequent waterlogging of the soil and the defeat of the bushes by a viral disease.

The main diseases of peonies and methods of treatment

It is worth considering the most common diseases of peonies and their treatment, leaf curling and solutions to the problem.

Rust

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Rust can be distinguished from other ailments by a number of symptoms, namely, by the appearance of brown, orange or reddish pads, which consist of mushroom spores and can soon turn completely red. The foliage can start to turn red quickly. The viral infection quickly spreads to nearby bushes.

To cope with the disease, it is necessary to prevent further spread of the dispute. For this purpose, diseased foliage is cut off and burned. The plantings are also sprayed with one percent Bordeaux liquid.

Lemoine's disease

Why are peonies getting smaller? Often the cause is Lemoine's illness. Experts cannot name the exact cause of Lemoine's disease. The defeat of the bushes is evidenced by:

shredding plants;
insufficient development of shoots;
lack of flowering;
the formation of a swelling on the root system.

Note! Often, the florist confuses Lemoine's disease with damage to the bushes by a root-knot nematode.

Affected bushes cannot be healed. It is recommended to dig up the plants from the flower bed as soon as possible so that the disease does not have time to spread to other bushes.

Gray rot

Gray rot is considered the most dangerous ailment that manages to hit in a short period of time:

stem part;
sheet plates;
buds.

Young shoots of a diseased peony begin to wither in the spring months. Soon you can find the appearance of gray mold on the green mass. Brown spots quickly spread around the stems near the root collar. Soon, the peony will begin to die off.

Additional Information! To cope with the disease, the affected parts are cut off and removed from the site.

The diseased areas are immediately cut and destroyed. For the winter, the stems of the plant should be cut short. In May, it is advisable to spray with one percent Bordeaux liquid. Also, one of the methods of prevention is the fight against ants that are capable of carrying diseases. If the gray rot has already shown itself, it is necessary to treat the peonies with a 0.6% Tiram suspension and first cut off all the affected parts of the plant.

Powdery mildew on peonies

Powdery mildew

Powdery mildew most often affects adult bushes. The appearance of a white bloom in the upper part of the green mass indicates a disease. The affected bushes do not die from the disease, but they can stop pleasing with flowering. Experts recommend spraying the plantings with a 0.5% solution of soda ash, diluted in equal amounts with laundry soap.

Cladosporium

Why do peony buds dry up? The disease often appears in early summer. On the leaf plates of an ornamental culture, a spot of brown, brown or dark purple hue appears. Gradually, the spots merge into one large, covering the main part of the once green mass. The foliage begins to turn yellow, curl up and soon dries up. Also, the green mass can curl into a tube. Symptoms may appear that the buds of peonies have dried up. Darkening of the stem and shedding of petals is also possible. For the treatment of bushes, it is worth treating with Bordeaux liquid.

Note! Spots on the leaves of a peony can also be colored purple.

Septoria

Septoria can affect not only foliage, but also stems. On both sides of the leaves, spots of a brown or brown hue appear. Gradually they merge and resemble one continuous light brown spot with an ash-gray tint.

Closer to July, sporulation of fungi can be found on plants, which quickly spreads throughout the bush. The buds of peonies dry out along with the foliage. Against the background of the disease, the decorative culture is not able to endure the winter frosts. Mushrooms overwinter on foliage that has fallen off. To cope with the disease, it is worth treating the bushes with a solution of Bordeaux liquid, which should be done according to the instructions.

Signs of septoria

Phylostictosis

Against the background of the disease, specks of a brown hue are formed on the leaf plates located in the lower part of the bush, on which a dark purple rim is formed. The spots grow quickly and begin to become covered with dark dots (blacken) - fungal spores. The latter are immersed in the green mass. The foliage dries out prematurely. Fungal spores are capable of hibernating on fallen leaves. The plant is weakened, and spores caught on young foliage begin to germinate and infect peonies.

To combat the disease, it is worth destroying the affected areas and spraying the buds with a 4% solution of copper sulfate in the spring or summer.

Root rot

Root rot is facilitated by fungi, which reduce the intensity of flowering. The root system of the plant, stems and cuttings begin to rot. Most often, a florist recognizes a disease when carrying out a bush transplant.High humidity provokes the appearance of plaque:

white tint;
gray;
pink.

Worth knowing! The source of infection is the soil or the infected rhizome. Bushes that look weakened, as well as perennials growing in soil with high acidity, are susceptible to root rot.

To cope with root rot, it is necessary to remove the affected roots as soon as possible by cutting out the rotten part up to healthy tissue and sprinkling the cut with a small amount of charcoal. Coal powder mixed with a small amount of foundation is also perfect for treating the cut area. For 40 minutes, the root system of each bush is disinfected in a solution of foundationol or copper sulfate. The bushes are planted in a new flower bed.

Leaf mosaic

The appearance of spots on the foliage signals the defeat of plants by a viral disease. In the case of a circular mosaic, foliage quickly becomes stripes of a light green palette alternating with dark green stripes. Small necrotic spots may appear. The mosaic of leaf plates cannot be treated. Affected specimens are dug up and burned.

Foliage mosaic

Verticillary wilting

The disease affects the bushes during flowering. The foliage and stems of the bushes begin to wither quickly. The causative agent penetrates into the culture. To determine wilting and understand why the leaves of a peony curl, you should pay attention to the cross sections of the shoots. If the vessels in this area darken, then the bush is affected by wilting. It is almost impossible to cope with the disease, since the pathogen overwinters in the area of the root collar and in the spring again harms the health of the plant, which has managed to bloom. Affected bushes are dug up and burned. The place where the bushes grew is treated with formalin.

Pion disease prevention

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To prevent the occurrence of various ailments of peonies, preventive measures are taken:

it is important to water the crop correctly, loosen the soil and apply top dressing;
only healthy seedlings are planted in the ground;
give preference to varieties of peonies that are resistant to diseases;
plantings are treated with chemicals every season;
garden tools must be kept clean.

Symptoms indicating that the plant has been attacked by pests

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The following symptoms can signal the appearance of pests:

The erosion of flower petals, which indicates the presence of bronze on the flowers.
Poor growth and lack of flowering, the formation of blisters on the root system in which pests live. A similar symptomatology is inherent in the defeat of bushes with root gall nematodes.
The blooming of the buds immediately after blooming signals the presence of a moth caterpillar on the plant.
The erosion of petals and foliage indicates an invasion of ants.
Withering, in which the foliage begins to curl and the buds begin to eat up. You can be sure that the flowers are attacked by thrips and aphids.

Peony leaves curl, what should I do? The cause is most often the invasion of the plant by aphids and thrips. It is important to spray the bushes with special preparations as soon as possible.

Common pests on peonies and methods of dealing with them

It is worth familiarizing yourself with the most common pests of peonies and a description of how to combat them.

May beetles or bronzovki

Insects are colored golden yellow. They diligently eat leaf plates, stems and buds. For the fight, it is required to treat plants with drugs that scare off the pest. It is important to collect beetles from flowers by hand.

May beetles

Aphid

Small parasites are colored green. As a rule, they are concentrated in the upper area of the shoots. Sucking the juices from flowers, they contribute to the wilting of the decorative culture.To cope with aphids, peonies are treated with Actellika or Fitoverma preparations.

Gall nematodes

Bloated roots and their damage indicate the invasion of nematodes. To cope with parasites and avoid the spread of pests to neighboring bushes, the affected plant is dug up and burned.

Additional Information! The soil in which the affected bush grew is treated with Formalin.

Hop thinworm

Hop thin worms feed on the root system of plants, which becomes the reason for the termination of the growth of the perennial, rapid wilting and the quick death of the bush. To eliminate fine worms, it is advisable to process flowers with Iskra.

Thrips

Thrips are small black colored insects. Particularly dangerous are parasites that suck the juice from the foliage during the growing season. Thrips are extremely difficult to spot on peonies due to their small size. To cope with the invasion of parasites, peonies are treated with Karbofos and infusion of dandelion and yarrow.

Ants

Peony buds secrete sugar syrup. This feature attracts ants, who enjoy the plant with pleasure. Insects not only drink the syrup, but also eat up the leaf plates. They start to dry out. To cope with them, the soil is treated near the peonies and leaf plates with a repellent.

Ants on peonies

Pest prevention

With the onset of spring, it is important to take preventive measures that will help avoid the invasion of pests and the defeat of peonies by diseases. It is necessary to treat perennials with fungicidal agents several times, namely:

at the time of germination;
during the budding period;
after the end of the flowering period.

It is advisable to use drugs of the type:

Maxim;
bordeaux liquid;
Topaz;
Fundazole;
copper oxychloride.

Note! In order to spray 1 adult bush, you will need to prepare 2 liters of solution.

Peonies are plants that delight with lush and abundant flowering. It is important to properly care for the crop and systematically inspect the flower beds, which will make it possible to timely detect the manifestation of diseases. This will allow you to quickly take measures to save flowers, which are considered a real decoration of the garden plot.