Rose pest control: processing and protection

HomeAbout rosesRose pest control: processing and protection

Rose pests cause damage to plants no less than fungal diseases. They feed on the pulp of leaves, buds and flower petals, as a result of which roses lose their decorative effect, and then die. Protecting roses from pests is a priority for every gardener, because these insects can not only destroy the rose garden, but also move to other plants.

rose pest

The rose leaf is a small nondescript butterfly that has a brown color, a wingspan of about 2 cm and a lifespan of about 2 weeks.

In early autumn, the leafworm lays yellowish eggs on the smooth side of the tree bark, where they survive the winter. By the end of spring, greenish-brown caterpillars appear from them, reaching a length of 25 mm, and it is they who mainly harm roses.

Caterpillars eat leaves on almost all shrubs and trees in the garden.

They feed on the pulp of the leaves and the buds of roses, after which holes remain on the leaves and they are deformed. Holes in the leaves create obstacles that do not allow nutrients to flow in the right amount, so the leaves are not just spoiled in appearance – their deformation leads to a weakening of the plant.

When the rose enters the time of flowering, the caterpillar eats the pistil, stamens and petals, the buds are wrapped in cobwebs. On the underside of the leaf, the caterpillar weaves a web, while the leaf folds into a tube. In July, this tube contains a pupated caterpillar, and in August a butterfly is born from it. It takes 2-2.5 weeks for a caterpillar to turn into a butterfly.

When dealing with these pests of roses, it is necessary to remove twisted leaves not only from flowers, but also from fruit trees and shrubs on the site. Rosan leafworm is very polyphagous and lives on apple, plum, pear, cherry plum, sweet cherry, cherry and walnut. She hits them just like roses.

Prevention. Dealing with a leaf roller is quite simple. For prevention in early spring, you can use a solution of nitrofen, which will protect rose buds from damage.

It is necessary to dilute 200-300 g of this product in 10 liters of water and spray the leaves of the plant.

control measures. The fight against this pest is recommended to be carried out at all periods of its life cycle. First you need to monitor the appearance of holes on the leaves of the rose, and then make sure that they are left by the leafworm caterpillar. Next, you should set the number of caterpillars. If it is small, you can simply collect and destroy individual individuals, but if there are a lot of caterpillars, you need to spray the plants with insecticides. When processing roses from pests, you can use the drug “Aktara”.

Pyrethroids, organophosphorus compounds, neonicotinoids are also suitable for combating rose leaflet. Effective drugs that affect the apple and fruit moths. Spray plants from all sides, trying to process the lower surface of the leaves on the bushes.

How to treat roses from thrips pests

Thrips pests – these small and nimble black insects, whose adult size is only about 2-3 mm – are very difficult to detect.

As you can see in the photo, these rose pests mainly live in buds, so you can see them on flower petals.

In hot and dry weather, roses are most affected by thrips. If the edges of the petals have darkened or discolored spots have appeared on the leaves and petals, then the rose is most likely affected by thrips. This insect harms the buds, which develop poorly, and because of them the flowers become not so lush and beautiful.

When pests appear on roses, treatment should begin with the treatment of plants, and if this does not help, all affected parts must be cut off and destroyed (burned). In autumn, around rose bushes, remove all plant debris and also burn it, and also dig up the soil to kill thrips larvae.

Before becoming an adult, the larva hides in the soil at the roots of the plant. During this period, she stops feeding, and the earth hides her, so neither systemic nor contact insecticides will work. In addition, thrips quickly get used to chemicals, so it is even more difficult to deal with them. To get the effect of fighting these pests, it is recommended to alternate drugs with different active substances, as well as increase the level of insecticide concentration.

Prevention. To effectively deal with insects, you need to track their appearance and alternate ways of fighting. Thrips develop especially quickly in hot and dry weather – only 2 weeks pass, during which adults develop from eggs. In cold weather, this cycle takes about a month. Therefore, it is useful to increase the humidity of the air, water the roses and spray their leaves with cold water.

control measures. You can spray roses with chemicals, but re-spraying should be done after a while so that the plant gets stronger and does not die. During this time, a new generation of thrips has time to appear, which also lay eggs. Before treating roses for pests, prepare a solution of laundry soap and spray the plants with it, and if this does not help, use chemical compounds. From thrips, roses are sprayed with systemic insecticides, to which flea shampoo is sometimes added.

From the larvae and eggs of insects deposited in the soil, loosening the earth at the roots helps, which allows them to be raised from the depths, then the soil must be sprayed with insecticides.

It is recommended to process roses several times, the interval between them should be approximately 10 days.

Chemicals with copper almost do not cause addiction in insects.

Treatment of home and garden roses from insect pests

The scale insect is a pest of both domestic and garden roses, it is very difficult to get rid of it, since the adult is covered with a strong shell that protects it from the effects of chemicals. Shchitovka starts up on roses that have been improperly or insufficiently cared for, on sick and weak plants, with excessive or insufficient watering.

The insect feeds on the sap of the plant and secretes nectar, which remains on the leaves and stems of roses, it is in these footprints that the presence of the pest can be noticed in the first place. Nectar is a sticky coating that is important to remove as it causes soot fungus to grow.

It is very simple to identify the larvae of the rose insect on flowers: shake the branches of the plant over a sheet of white paper. If there are these insects on the bush, then you will find them in the form of crumbling dust particles. The scale insect can be a distributor of infection, so it is necessary to fight it.

Another sign of scale damage is the presence of scales on the shoots and leaves of roses.

Prevention. In late winter – early spring, care must be taken to ensure that the bushes are well ventilated. For this, it is important to carry out spring pruning. It is also necessary to regularly inspect the plant in order to detect signs of damage in time. In addition, the bushes can often be sprayed with water, but do it in the morning so that it has time to evaporate during the day.

Control measures. It is important to inspect the stems and leaves of roses for signs of scab damage. If a sticky coating or hard scales are found, pest control must be started immediately.

There are no special chemicals against the insect, so you can get rid of it by cleaning it from the plant. To do this, use cloths moistened with soapy water or a soft sponge that do not damage the plants. Such a measure will not only help get rid of the scale insects, but also make the roses unattractive to other harmful insects.

If the number of pests is large, you can spray with soapy water, adding engine oil or kerosene to it at the rate of 5-6 drops per 1 liter of water. In this case, the insect will have nothing to breathe.

The use of insecticides is not recommended. If the number of scale insects is such that it can lead to the death of the plant, it is necessary to treat it with broad-spectrum or systemic preparations, for example, Aktara. This drug belongs to neonicotinoids and is effective against many pests of garden plants. It is used for spraying the aerial parts of plants or applied to the soil. It protects against aphids, scale insects, thrips.

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