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Insects - pests can cause such serious harm to roses that it can lead to the weakening and even death of the plant. Conducted correct and timely measures to combat uninvited guests, at the same time reducing the risk of infection of the queen of flowers with infectious diseases.
It is necessary to begin preventive measures with the preparation of protective equipment - rubber gloves and respirators. After finishing the treatments, wash the face and hands with soap and running water.
Pest control measures:
By chemical means
Fighting aphids must begin before bud break. After the cover has been removed, the bushes are treated with a strong solution of urea, a half-liter can of agent is dissolved in 10 liters of water. Shrubs are sprayed with a solution at an air temperature not lower than +5 ° C. When the first insects appear, anti-pest agents are used, such as Inta-Vir, Spark, Tanrek. Repeat the processing need in 15-20 days. These drugs have a systemic effect, quickly penetrate the plant tissue and almost never washed away by rain.
You can fight with aphids without the use of chemicals. A small number of pests can be destroyed by mechanical removal of insects, removing them with a damp cloth. You can trim populated by aphids shoots.
You can destroy a colony of aphids by spraying pests with soap and water - a grated piece of laundry soap is dissolved in 10 liters of hot water. The rose solution is treated with a cooled solution.
Thrips on roses
Hot weather with low air humidity leads to a grayish-brown bloom on the seamy side of the leaves. These are traces of thrips. Insects at any age suck cellular sap. First, on the leaves you can see yellowish or colorless spots or strokes. The number and size of the spots increase and merge together. On the damaged part there are holes from the dead part. The leaves turn brown and die. Formed buds are deformed and fall prematurely. Insects are very mobile and can quickly move from a settled plant to a healthy one.
On the surface of damaged plants accumulate sticky secretions of thrips, on which soot fungus multiplies.
To prevent the appearance of a pest in closed ground, it is possible, while maintaining high air humidity, to spray plants regularly and periodically wash them with a shower.
Regular inspections of plants for pest detection will help to notice and start pest control in a timely manner.
The most common pest found on roses is a spider mite. It is this pest that most often causes a weakening of the plant. Leaves fall on the affected bushes, the rose's immunity weakens, the bush becomes vulnerable to infectious diseases.
Spider mite is a very small insect, less than 2mm in size. Microscopic dimensions make it unobtrusive. Insects that form colonies of less than 100 individuals are not dangerous for the plant. But the feature of the pest is its rapid reproduction and colonization of neighboring plants.
Food for the mite is the cell sap, which pests pull during active growth. Rose bush weakens and depletes. This pest is especially dangerous for young plants where the root system works poorly.
The pest lives on the inner side of the leaves, forming a dense cobweb in which it lives. According to this sign, you can easily guess the presence of a tick.
Gnawing pests - beetles, leaf cutters, caterpillars, sawflies damage leaf plates, shoots, buds outside, stamens and pistils inside the flower. As a result, growth slows down, the plant weakens, the number of flowers decreases.
Another type of pest - miners. They eat away the inner tissues of the leaf, leaving the veins and outer covers intact.
Most often, caterpillars damage rose bushes planted in a shaded area or near deciduous trees. Hatching from eggs in early spring, young caterpillars descend from the trees and gnaw leaves on the bushes on the leaves. Damaged flowers bloom from the eaten buds, young leaves stop developing. You can manually collect the tracks only if there are few of them. It is possible to fight with a large number of pests only by spraying. In the arsenal of a large number of chemicals and decoctions of herbs.
Bee leaf cutter
The appearance of this pest is immediately noticeable - cut out semicircles appear at the edges of the leaves on the rose bush. Such damage does not cause much damage, but the nourishment of the bush worsens, the appearance of the plant becomes worse. Cut bee leaves - leaf cutters are used to create their nests.
Methods of struggle
Damage to the leaf cutter bees does minimal damage and only to the appearance of the bush. Spraying the bushes with pesticides is not necessary. To save the leaves, you can cover the bushes with a grid. You can use the drugs used in the vineyards Otos, Super Fas, Adamant. Greater effect will be obtained if they are used late in the evening.
Voracious beetle of golden-green color up to 20 mm.
Smaller, up to 12 mm, but no less gluttonous, shaggy, black beetle.
Both of these beetles actively feed from May to August with flowers of roses and other flowers. At the beginning of summer, the grown-up females lay eggs in the soil, and larvae hatch by the end of the season and pupate. Until spring, the larvae become adult beetles and set out to fly next summer.
The appearance in the garden of caterpillars folding leaves into cigars is a common occurrence. Rosettes on roses are less common, but they cause serious harm. Rosan moths are inconspicuous butterflies with a wingspan of up to 22 mm. The spotted wings are dark brown or golden-ocher with wavy stripes and spots.
Leaflets overwinter in the cracks of the bark of the trunks and branches. Return to activity in the middle of spring. This coincides in time with the isolation of buds on late apple varieties. Young caterpillars eat fresh leaves, damage buds, eating away petals, pistils and stamens.
Older caterpillars roll leaves into tubes, damage ovaries and fruits, penetrating into seed chambers. In a month, at the place of feeding, the caterpillars become pupae. Most often this occurs in the leaves of the tubes. Adult butterflies fly out at the end of July. After 5 days, they lay eggs, up to 250 pieces each individual. Eggs overwinter, maintaining up to 27 degrees of frost. More severe frosts destroy up to 90% of wintering forms.
Cleaning the loose bark in autumn, whitewashing trunks.
Calendar of rose treatments for pests and diseases
A set of tools for the care of roses should consist of drugs that allow to destroy both pests and pathogens.
- Means for powdery mildew and spotting: Falcon, Tilt Super Alto.
- Remedies for downy mildew: Revus, Profit Gold, Thanos, Ridomil Gold, Previkur.
- Insecticides: Aktara, Inta-Vir, Spark.
- Means to combat ticks: Vertimek, Fitoverm, Apollo, Sanmayt.
- Means that improve the adhesion of drugs - liquid, green or laundry soap.
All of these tools can be mixed with each other, increasing their effectiveness.
Approximate list of required treatments
- With the appearance of the first leaves on the bushes, a mixture consisting of preparations of groups 1,2 and 3 is used. We carry out at least two treatments at intervals of 10-14 days. With the appearance of a large number of insects, use additional funds from group 3.
- The time the nomination of the buds - a mixture of means 1,2 and 3.
- Mid - end of July. A mixture of the funds of groups 1 and 2. Add drugs from group 3 as necessary. Means each time you need to change to avoid addiction.
Preparations from group 4 (from ticks) are added to the mixture if necessary.
Every time, carrying out processing it is necessary to consider weather conditions.
Unfortunately, the majority of ornamental varieties, obtained as a result of long-term selection with the help of repeated repeated crosses and selection, are subject to various diseases and suffer from pests.
Most insects, feeding on different parts of cultivated flowers, reduce the decorative appeal of roses or simply ruin the plant. Only by knowing the peculiarities of the structure and the way of life of insect pests, it is possible to choose effective methods to combat them. We suggest to get acquainted in more detail with the group of insects most harmful to rose bushes, to consider ways to prevent and protect roses from pests. Also, the publication presents general recommendations on the organization of the prevention and control of harmful insects.
Most harmful insects
One of the factors negatively affecting the condition of flowering bushes is the activity of phytophagous insects, as a result of which physiological processes can be disturbed, the development of plants is delayed, their growth is weakened, and, as a result, decorative qualities decrease. That is why, in order to timely detect harmful insects and take the necessary measures, it is necessary to periodically inspect flowering bushes, especially in spring. We present the most common and harmful pests of roses, a description of their features and ways to effectively protect.
The most common types of sawflies are: ascending, descending, combing, slimy, warty. Adults are hymenoptera of medium-sized insects that are absolutely harmless to green plantings, unlike their larvae, resembling caterpillars in appearance. The larvae, eating the leaves of rose bushes, leave only bare stems. Young flowers, not very strong flowers, growing both in the open field and in greenhouses and greenhouses, are particularly vulnerable. In early spring, as a rule, in April, larvae (larvae) appear from the eggs, reaching a length of no more than 5 mm, with a translucent body of a whitish color. At first, the larvae are kept in a compact group, then gradually crawl away, eating the leaves of the whole bush. About a month later, matured caterpillars move onto the soil and pupate.
Harm done - ascending sawflies, moving up the inner part of the leaves, eat up all the leaf flesh, leaving behind characteristic skeletons of veins and bare stems. Descending sawflies, to move down, gnaw through young shoots, making tunnels in them, which leads to the withering and death of young shoots.
Prevention and control methods:
- autumn soil loosening under the bushes, in order to destroy the pupae,
- pruning and burning damaged young shoots,
- spring treatment of bushes with insecticides - preparations intended for the destruction of harmful insects and their larvae.
On flowering plants can be found two of the most common species - green rosy and aphid leaf. It is a small insect, the size of which does not exceed a few millimeters, grass-green, black or brown color. With the help of a special proboscis, designed to pierce young shoots and rose leaves, the aphid sucks the juice from the plant. From the eggs laid on the plant in the spring, colonies of larvae appear in the spring, which feed on sap of shoots, buds and young leaves. Turning to the adult phase, a period of active reproduction begins, forming several generations over the season.
Harm done - feeding on plant sap, aphids colonies are able to completely destroy the flower. Young stalks with buds wither, leaves wrinkle ugly and curl. Adults, laying eggs, are able to move from an infected flower to the rest, thus filling the entire flower garden. Insects that feed on aphids - hoverflies, gold-necked women and ladybugs.
Prevention and control methods:
- treatment in early spring of rose bushes with insecticides (arrivo, aktar, rohor, calypso),
- Biological preparations - agravertine, fitoverm, it is recommended to use during the period of mass appearance of insects,
- folk remedies for pests - tincture or decoction of wormwood, soap solution.
Common spider mite
One of the most common pests of cultivated plants in general, and roses in particular, is a small arthropod insect, not more than 0.5 mm long, more often yellow, green or brown. A characteristic feature is that only fertilized females successfully survive the harsh winter, hiding in the crevices of the bark of trees, fallen leaves and other plant debris. With the onset of warming up to 13-15 degrees, females get out of the shelter and move to the inner surfaces of the leaves that appear. After some time, having built a thin web, the female lays eggs in it. The period of development of the larvae is 1.5-3 weeks, depending on the air temperature. The larvae, as well as adult insects, feed on the sap of young leaves, shoots and buds of flowering plants.
Harm done - the affected leaves first change color (become grayish, then brown), and soon wither and die. Without timely intervention, this group of ticks is able to completely cover the plant with the tiniest cobwebs and completely destroy the rose bush. Symptoms of a lesion are pale foliage, on which whitish dots are observed from the inside, the number of which increases with time.
Prevention and control methods:
- periodic agrotechnical measures - digging up the soil under the bushes, removing weeds,
- spraying plants with chemicals designed to combat ticks (acrex, isophen, omaite),
- use of the natural enemy - predatory mite (only in the conditions of greenhouses or greenhouses).
Almost omnivorous pest, common in almost all regions of Russia, but more common in the steppe zone. A small moth (wingspan up to 2 cm) with a thin belly, brownish-gray color. In the autumn, the moth lays its eggs in the crevices of the bark of fruit trees, where they successfully hibernate. In mid-spring, there is a massive rebirth of greenish-brown caterpillars up to 2.5 cm long. They feed mainly on leaves and buds of roses, eating out round holes in them and penetrating inside the buds. After completion of the period of feeding and development, the caterpillars pupate into folded leaves. Depending on the air temperature, the period of development of the cocoon in the butterfly lasts 1-2 weeks. The mass departure of butterflies is observed in June – July.
Harm done - affects young shoots, leaves and buds. Rose bushes with damaged leaves lose their decorative appearance, holed buds with eaten pistils and stamens do not bloom, the plant looks weakened. The greatest damage is caused during the growth and development of the caterpillar.
Prevention and control methods:
- spring treatment of plants with nitrafen - a tool designed to combat the wintering stages of pests (despite the ban, is sold in flower shops) or DNOC, which is now being sold under the name of a double blow,
- twisted leaves are manually cut and burned,
- treatment of bushes with aktar preparation, with a large accumulation of caterpillars.
Small insect pests, not exceeding 1 mm. Currently, several hundred species of small thrips that feed on plants are considered dangerous pests of green cultivated plants. Many species prefer a hidden lifestyle and despite the presence of wings, as a rule, they move only from one plant to another. The larvae are almost the same size as the adult insects, but without wings and the color is slightly lighter. To determine the presence of thrips on the plant, you can carefully look at the flower bud - small scratches or yellow spots, gnawed edges of the petals, are a clear sign of the presence of parasites. For fidelity, you can tear off and smash a bud with your fingers - most likely, you will find small black insects running fast, or shake a bud over a white sheet of paper.
Harm done - feeding on the plant sap, thrips pierce the petals, buds and leaves of the flower. After some time, the spores of various fungi get into the formed punctures, the weakened plant starts to ache, fade and can die without timely intervention. If thrips settled in an opened bud, then dirty-yellow spots, scratches appear on the petals, the flower quickly fades.
Prevention and control methods:
- digging the soil under the bushes, removing fallen leaves,
- removal of damaged flowers with subsequent burning,
- treatment of plants with insecticides or infusion of nettle.
General recommendations for pest prevention and control
As a rule, healthy, well-developed rose bushes are less susceptible to insect pests, so systematic care and the creation of optimal conditions will guarantee the successful cultivation of your favorite flowers. Специально разработанные рекомендации помогут правильно организовать профилактические мероприятия и успешно бороться с уже появившимися паразитами.
- Эффективность борьбы с насекомыми-вредителями напрямую зависит от времени начала вмешательства. Try to introduce a permanent rule for yourself - a periodic (once every 2-3 days) thorough inspection of the flower garden.
- Processing roses from pests includes not only spraying the plants, but also watering them with special solutions in order to destroy the larvae and insects that are in the ground. Infusion prepared from nettle is used simultaneously to feed plants and to prevent the appearance of aphids. For pest control use undiluted extract of nettle infusion, which is sprayed with rose leaves, especially from the inside.
- In order to increase efficiency, periodically alternate used pests of roses - insecticides with vegetable tinctures. Try to use chemicals only to destroy pests that have already appeared, it is preferable to use folk remedies for prevention.
- Do not rely solely on chemical preparations for the destruction of harmful insects, you might think that plant next to roses from pests. For example, a gypsophilous panicle or lavender shrub, planted near roses, discourages aphids and ants.
- When deciding how to treat roses from pests in the spring, be sure to consider the temperature and the time of appearance of parasite larvae. By the beginning of the period of mass emergence of larvae, it is desirable to treat the bushes with one of the insecticides.
Pests of roses are ruining luxurious flowers. Description of dangerous insects with photos, methods of treatment, videos will help identify the problem, get rid of the pest and save the rose from death. Every year, pests cause significant damage to professional growers and amateurs. Conducting preventive sprays will help protect the rosary from insects and grow beautiful flowers.
Pests and how to deal with them
Spider mite This parasite is a great threat to your flower garden, because of a lot of harm from it. The main symptoms of the spider mite encroaching on your flower may be pale yellow spots on the leaves themselves and a thin spider web. It can be found on the bottom of the leaf and on the cuttings. Basically, the leaves suffer from the actions of this parasite, as it sucks out all the juice from them.
Mites crawling on the underside of the sheet. Adults are greenish-yellow in color, and the larvae are small, green, and have as many as three pairs of paws. At one time, the female is able to lay up to 180 larvae. It should be said that some growers may confuse the appearance of a tick with one of the diseases - chlorosis. To make sure that the yellowing and withering leaves are the result of insects, simply look at the inside of the sheet, armed with a magnifying glass.
What control measures to take against spider mites? Roses are treated using Fufanon, Iskra-M or Tiovit Jet products. Also in the fight against these pests, settled on roses, colloidal sulfur will help.
Bee-leafed. If on the leaves of your plants in the middle of summer oval or round holes began to appear, it means that your rosary was attacked by a sheet rat bee. In fact, the little bee is simply trying to build its earthen nest with the help of stubs of leaves.
How to spray a plant to get rid of a bee? In fact, it does not bring much harm, except that it slightly spoils the appearance of the bush. In general, this reason is not enough to get rid of the bee, but if you really want this, you can spray the bushes with any of the following drugs: "Adamant", "Otos", "Super Fas".
Bronzovka. The second name is a cockchafer. A rather unpleasant insect. This is a big shiny beetle with green wings with a golden sheen. The larvae of this bug live in the ground - they are rather thick, white, have three pairs of legs. The bugs themselves are quite dangerous - they damage both the leaves and the flowers themselves - therefore, the control measures must be taken immediately.
How to deal with the May beetle? To get rid of the beetles will help drugs that need to process plants in the fight against aphids.
Sawfly. Like bronzovka destroys the buds and leaves of the plant. These insects are particularly rampant in the springtime. There are many types of sawfly, and they are all equally dangerous. Their larvae wait for winter in the soil, and with the onset of warm days they become more active. Although the greatest danger is the descending sawfly, which can seriously damage the escape, penetrating inside.
What to do with pests of roses of this type? First, you need to spray the plant with pesticides. Secondly, all damaged shoots and buds, as well as those shoots, at the top of which females laid eggs, burn. In the fall, you can dig up the ground under rose bushes so that these pests of roses freeze in winter.
Olenka. The black hairy beetle is rather large. Damages the leaves and flowers of your plant. The larvae are under the ground, where they safely wait out the winter frosts. If these beetles appeared on roses, take immediate action.
How to get rid of these bugs? The following measures are necessary: you can collect insects by hand (in the morning they are still sitting on roses) and destroy them. Also, the fight against them can be carried out with the use of various drugs that help get rid of aphids.
Listovertka. Unpleasant caterpillar, which rapidly destroys young shoots, leaves and buds. When it turns into a butterfly, it ceases to be dangerous, but if you find caterpillars, immediately take measures to combat them.
To save roses from pests, you can collect them manually (if there are not too many) or treat the plant with pesticides. Some talk about the effectiveness of sprinkling rose mustard.
Aphid. Very unpleasant insects, quite large in size, cause considerable damage to the rosettes. They are green, have long antennae. Aphid is a very prolific parasite that can develop up to ten generations in a year. It harms the young shoots and buds, which under the influence of an insect may never open. If the situation is really bad, a very large amount of aphids can be found on the leaflets.
Spray roses from pests need means "Fufanon" or "Biotlin", and in hot weather are used "Iskra-M" or "Iskra Golden". You can also use a solution of kerosene (2 g per 10 liters of water).
Thrips. Small midges of light yellow color, which suck the juice from the leaves and rosebuds. On the affected leaves themselves, yellow spots are formed, and the petals are covered with reddish specks. They become more active in hot weather, therefore flowers that grow in dry places are especially susceptible to their influence.
The measures to combat thrips are as follows: spray the bushes with infusion of nettle or use the preparations "Aktara" or "Enzio".
Rosanic Tsikadka. These insects drink juices from plants. Their white larvae lead a sedentary lifestyle. In an adult individual, the body is white and long. They are very mobile, so it is extremely difficult to manually remove them. When the insect infects the rosette, the leaves are covered with small, white dots, and if no action is taken, they turn yellow and wither.
For the destruction of parasites use insecticides.
Omnivorous cicadas. They also use the name “slobbering pennitsa”, which it received for emitting a special foam in which it lives by sucking useful substances from the leaves. Usually hides in the leaf bosom. The color of the adult is gray-yellow.
They are also destroyed with insecticides.
Pests and diseases of roses can cause a lot of trouble. If prophylactic spraying is required to combat a variety of diseases, in order to prevent insect invasion, additional measures should be taken:
- Roses are treated for diseases and pests in the spring using copper oxychloride solution (0.4%).
- Burn all cut shoots and torn weeds - there may be pests.
- Remove all leaves from the plant before hibernation so that insect eggs do not remain on the bush.
- In the autumn, dig up the soil under the rose bushes so that the larvae and eggs that are underground, froze during the winter frost.
- Also in the fall you can handle the plant with copper sulphate.