Diseases of peonies are rarely observed by gardeners; these flowers are considered resistant to various pathologies, the appearance of parasites. Sometimes a culture is affected by a disease. It is necessary to take measures as soon as possible to prevent the death of the flower, contamination of nearby plantings.
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Pathologies and their treatment
More often than others, fungal infections are noted. Less commonly, peonies die from viruses.
With rust, spots of brown, orange, red appear on the leaves of a diseased flower. Such neoplasms are composed of fungal spores. If you do not start the fight against the disease in a timely manner, spores will begin to spread with the help of the wind, and will hit the plantings growing nearby. To save the peony, it is worth getting rid of all the affected leaves and burning them. The ailing flower itself must be sprayed with 1% Bordeaux liquid.
Gray rot is considered one of the most dangerous diseases, since it destroys any elements of the flower. It can be found on leaves, buds, stems. Often, pathology is the reason for the wilting of young shoots in the spring. It appears in the form of gray mold. The disease gradually leads to the death of the flower. It develops especially rapidly at high humidity.
It is necessary to immediately cut off, destroy the affected areas. Before the cold season, it is worth trimming the trunks shorter. In March-April, spray with 1% Bordeaux liquid. Try to avoid the appearance of ants that can carry the disease. If a gray rot appears, the affected parts are cut off, after which the flower is poured with a 0.6% Tiram suspension.
Powdery mildew infects adult plants in most cases. The disease is characterized by a whitish bloom on the leaves, often localized in the upper part. For treatment, the peony is sprayed with a 0.5% solution of soda ash, in which a little 72% of perfume-free laundry soap should be added. Re-processing is carried out after 8-10 days. In addition, a 0.2% Figon solution is effective.
Leaf mosaic is a viral pathology. It appears as light green stripes, alternating with dark green, creating a mosaic pattern. In addition, necrotic specks may be noted. The pathological process does not lend itself to therapy, infected specimens will have to be destroyed, burned.
Pests and the fight against them
With insufficient care, insects can parasitize peonies. Ants are most often observed. They devour foliage and flowers, trying to get the sweet secreted by the plant. It is necessary to regularly spray planting and the soil around them with repellents.
Aphids are not uncommon. The parasites suck the plant juices. With a severe degree of damage, the peony may die. To destroy the pest, it is necessary to process the affected specimen with Fitover or Aktellik. If there are few insects, you need to try to pick them up with your hands or knock them down with a stream of water.
Nematodes parasitize the root system. Spherical swellings form on the roots, inside of which there are worms. It will not be possible to save a diseased plant. We'll have to remove it from the flower bed as soon as possible, burn it. The soil must be treated with 1% formalin solution. To prevent the occurrence of parasites, it is worth carefully selecting sprouts for planting, digging up the soil deeply. When cleaning a flower bed, it is worth getting rid of any plant residues, dispose of them.
Bronzes are dangerous from late spring to August. These yellow-green beetles eat leaves, stems, flowers. To get rid of them, from the end of July to the end of August, you need to loosen the soil more often, in the morning, manually remove pests from the plantings. When buds are formed, it is recommended to spray with an infusion of tomato stems.
Thrips can be found during the growing season, budding. Due to the small size of the parasites, it is not possible to calculate for a long time. Spray the dandelion or yarrow tincture 5-7 times on the flowers. It is allowed to use a 0.2% solution of Karbofos.
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