Peonies: photos of diseases and pests, their control

HomeGarden FlowersPeonies: photos of diseases and pests, their control

The showy flowers and lush peony foliage make these flowers one of the most popular flowers for hobby gardeners and landscapers. Unfortunately, like all garden plants, peonies are threatened by diseases and pests, and without taking any measures to combat them, you can easily deprive your site of these beautiful flowers. This material is devoted to how to protect flower beds from various misfortunes.

Peony diseases: rust, powdery mildew, gray rot and brown spot

Here you will learn about the most common diseases of peonies and the fight against them in your backyard.

Rust . Here you will learn about the most common diseases of peonies and the fight against them Peony rust is a fungal disease that affects the leaves of peonies. They are in your garden. They are covered on both sides with yellow-brown spots. Moreover, the inner side of the leaves is covered with yellow-orange spots, which are clusters of spores.

Control measures . To avoid damage to plants by this disease, it is necessary to collect and burn plant residues in a timely manner, to dig up the site. In addition, in the spring, peonies should be sprayed with Bordeaux liquid. It is important to know that proximity to the pine garden is a potential catalyst for rust development. In order not to have to treat peonies for this disease, do not plant plants next to conifers.

Powdery mildew. Peony leaves are affected by this disease. Look at the photo of this peony disease: the leaves affected by powdery mildew look like they are covered with a coating, under which they first turn yellow and then die off completely.

Control measures . Plant debris should not be left on the site. For spraying, using a soap-copper solution at the rate of 200 g of green soap and 20 g of copper sulfate per 10 liters of water.

Gray rot . Peonies suffer from this disease most often. Gray rot affects stems, foliage, buds, as well as underground parts of the plant. As a rule, this disease affects the young generation of shoots, especially during their active growth, i.e. with the onset of spring. You can determine the disease by a grayish coating that covers the base of the stem, after which it begins to darken.

If measures are not taken in time, the stem will break and fall. Wet and cold weather is favorable for this disease.

Gray rot affects plants throughout the growing season.

Control measures . First of all, it is necessary to observe agricultural technology. Peonies need to ensure timely loosening of the soil and watering, regular weeding, and the introduction of high-quality top dressing.

With the onset of autumn, the stems of plants are cut to the very ground, after which the cut stems are immediately burned. In early spring, planting peonies are treated with fungicides in order to prevent the disease.

Brown spotting . This disease often affects the leaves of peonies. Moreover, the probability of its development depends on the humidity of the air. The higher the humidity, the higher the possibility of plant damage. Rough spots of a brown or dark purple hue appear on the leaves. At the beginning of the disease, the size of the spots is insignificant, but after a while they cover the entire leaf, moving to the buds. Affected buds begin to crumble.

Control measures . You can fight brown spotting with the same means as with rust.

Peony pests: caterpillars, butterflies, ants and beetles

In addition to diseases, pests also threaten peonies, photos and measures to combat them are presented below.

gall nematodes. Almost every gardener has heard about these peony pests, as they are the most common. As a habitat, root-knot nematodes choose the root system of pions, which, under their influence, is covered with knotty formations. As soon as the affected part of the rhizome of the plant disintegrates, the pests move to the next intact root.

Control measures. It is quite difficult to deal with this pest, therefore it is recommended to carry out preventive measures. It is important to regularly inspect the root system of peonies. Before planting a new seedling on the site, it must be checked to make sure that the pest has not hit the roots. It is also recommended to introduce a full mineral fertilizer into the soil, after which it must be dug up. At the end of the growing season, all plant debris must be removed and destroyed.

Caterpillar of the scoop butterfly and the hop fine-moth. Look at the photo: this peony pest gnaws out the buds of plants that grow in a completely shaded or shaded area. For the root system of peonies, the caterpillar of the hop fine-moth can be dangerous.

Control measures. As control measures, pheromone traps or containers with fermented kvass are hung at a height of 1 m. They destroy weeds, especially flowering ones, in order to deprive scoop butterflies of nectar for food and lead them to exhaustion.

Turf ant. This pest infects the buds by eating the petals. In addition, it feeds on the secretions of the buds.

Control measures. To combat this pest of peonies, plants and the soil around them should be treated with special repellent preparations. Means can be prepared independently or used ready-made.

Bronze beetle. The pest feeds on petals, stamens, and pistils of almost all plantations. The larvae of bronze beetles live in manure or on plant debris.

Control measures. It is recommended to treat the plants with hellebore-based tincture. You can also treat peonies with chemicals that are designed to combat this pest.

Advice. You can fight the scoop with a decoction of wormwood: boil 1 kg of grass in 3 liters of water for 15 minutes. Treatment should be carried out 2 times with an interval of 7 days.

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Wednesday, November 8, 2023