Why do thuja burn in the spring. How to care for thuja in the garden so that it is lush and green? Why does thuja turn yellow and what to do video

We are already accustomed to the fact that dry leaves fall from trees and shrubs in autumn, but when this happens with conifers, this is a signal for us that some kind of problem will appear, but this is not always the case. In fact, conifers every year, a process very similar to leaf fall also occurs, only it does not look so beautiful.

Now it has become very popular to plant such a coniferous plant as thuja to decorate their front gardens. Therefore, in the article we will analyze in detail why the needles (its leaves) turn yellow in thuja, it begins to dry and what to do about it.

The main reasons why thuja turns yellow and dries

1. Natural process... In early autumn (September-October), you can often see that the needles located inside (near the trunk) of the thuja turn yellow, and not only the needles themselves, but small branches begin to fall off. This is the needles that have grown 3-5 years ago and have fulfilled their function, and because of the new needles, it gets little sunlight.

2. Poor quality planting material. This is the most common reason why thuja turns yellow immediately after planting. Therefore, when choosing a thuja for planting, you need to pay attention that it is not overdried (if you scratch the root, then juice should be released), an earthen lump around the roots was preserved, there were no pests and signs of disease.

3. Incorrect fit. Thuja will begin to turn yellow if the following mistakes were made during planting:

• the root is too deep;
• the root neck was left bare;
• wrong planting site: too sunny, windy, far away ground water, with unsuitable soil.

4. Insufficient care. With the right place, thuja requires minimal care, but reacts very strongly to insufficient watering (you need to water 1 bucket once a week, and during a drought period - 2 buckets twice a week) or waterlogging of the soil (roots rot). And if the thuja was planted in a sunny place, then the soil around the tree should be mulched in order to protect it from moisture loss and sunburn.

It is imperative for a newly planted tree to install a fence to prevent animal excrement on it.

5. Pest damage or disease... Fusarium, tui brown and cytosporosis are considered dangerous diseases for thuja. For prevention from them, after planting, the thuja must be treated with a solution of foundationol (10 g per 10 l of water) or.

Damage to the plant with thuja aphids and thuja aphids can lead to yellowing and falling off of the needles. To get rid of them, the tree is sprayed with karbofos, actellik, rogor or decis.

Having determined the reason why the needles of the thuja turn yellow (the so-called leaves), you can save the entire tree from death.

Conifers are unpretentious and durable. But even these mighty giants are subject to all sorts of diseases.

The article will tell you about thuja diseases, why thuja turn yellow and how to treat them.

Natural causes

The reason for the yellowing of thuja can be hidden in many factors.

Below are the main natural reasons why the thuja has turned yellow and dried up, and its needles fall off.

1. Darkening of the needles is observed in thuja trees at the end of the growing season, usually in late autumn.

The tree seems to be dying. But this is not the case. Thus, the thuja protects from the cold and acclimatizes to winter.

1. One of the reasons for the change in the color of thuja needles was improper care of a freshly planted tree.

It is forbidden to water, move or expose a tree that has not taken root to bright sunlight. It is not recommended to let animals, such as dogs, near the tree. They can damage the delicate roots, thereby ruining the plant.

Note: yellowing or browning of individual thuja branches at the bottom of the crown is a natural process. Wilted appendages should be carefully removed by hand.

Thuja needles are gentle and straight, sun rays leave burns on them. It is recommended to cover the tree, protecting it from the direct rays of the spring sun. To do this, use kraft paper, burlap.

Diseases

Consider the most common diseases of the thuja shrub:

1. The most common cause of yellowing of thuja is improper planting of the seedling.

The root collar is incorrectly located, too deep or, conversely, very close to the surface. The next most popular reason is when the root system undergoes decay.

Most often, the cause of decay lies in the pathogenic activity of fungi and microorganisms, such as aphid aphid, bark beetle or tick.

1. Root burns.

An excess of fertilizer or a lack of oxygen can burn the thuja root system. Because of which the tree turns yellow, turns brown and withers.

The needles are crumbling. Small strings appear on the branches, eventually turning into cones. They, in turn, adversely affect the tree's ability to reproduce.

1. Thuja damping is also a common cause of needles falling off.

This happens as a result of planting trees too close to each other. Imitation. With this method of planting, insufficient air circulation around the plants occurs.

How to treat

You can check whether the tree has died in this way: bend the branch, the dead branch will break off, as it has already dried, and the living one will bend.

I would like to note that all diseases of coniferous trees can be easily treated if they are detected in time. The fungus is treated with a foundationol solution.

Dilute 10 g of the drug per 10 liters. water and process the tree 2 times, with a break of 10 days. The affected processes must be removed immediately.

For the extermination of insects, solutions of karbofos, actellik or fungicides are used.

Please note that when insect pests appear on a tree, it is important to prevent the formation of larvae. Otherwise, the treatment is useless and it will be impossible to remove the insects.

Prevention

First of all, you need to follow the rules and care for her.

Remember that the soil is not fertilized before winter. All work on land enrichment begins in the spring, during active vegetation.

Provide proper winterization.

1. For this, the roots of the tree are covered with foliage.
2. The crown for the winter should be covered with burlap. It is also recommended to twist tall trees with bundles. This will save fragile branches from breaking off under the weight of the snow.
3. Also, do not forget to periodically shake off snow from trees in winter.

Thuja is popular in landscape design thanks to its beautiful evergreen needles. Therefore, any disease immediately affects its decorative effect, sometimes causing irreparable harm. Let's try to figure out what factors affect the yellowing of thuja and what to do to avoid this trouble.

Thuja is characterized by unpretentiousness and resistance to diseases, as well as to pest attacks. However, like any other tree, this resistance is not absolute - the plant may periodically turn yellow, shed its needles and its branches may dry out. To find out how to help thuya in such a situation, you first need to establish the cause of such phenomena. There may be several of them:

Natural. Often the needles live from three to six years, and after this period they first brighten, then turn yellow and, in the end, die. This process is accompanied by yellow staining of individual branches in the middle of the crown around the trunk. Subsequently, such parts of the tree simply fall off. A similar phenomenon is called branch fall and is observed, most often, in the autumn.

Seasonal. In winter, some types of ephedra can be colored golden-bronze, brown, brown. Thus, the tree reacts to cold weather and adapts to frost. With the arrival of spring, the needles should return to their usual color. However, if after winter the thuja turned yellow and did not turn green again, it's time to think about what to do, since in this case you are dealing with some serious problem that needs to be addressed and as soon as possible.

Did you know? Seasonal color changes are characteristic of western and folded thuja. The varieties of the European thuja "Brabant", "Columna" and "Holmstrup" turn slightly brown. In winter and summer, the variety "Smaragd" remains the same color, for the needles of which no frost is terrible.

Like all conifers, thuja is prone to sunburn in spring. At this time (preferably from February), it must be covered with kraft paper, agrofibre or other similar devices.

Animals. The reasons for the change in the color of the thuja and the drying out of the needles can also be the regular bowel movements of cats or dogs. From dog urine, the tree becomes covered with a black coating.

Also the reasons for the changes in appearance thuja can become improper care, diseases and pests. We will talk about them in more detail.

Improper care

Over or under watering

Thuja loves well-moistened soil, but can not tolerate stagnant moisture, however, as well as the close occurrence of groundwater.

The recommended frequency of watering for thuja is once a week, in dry periods, twice a week, and in the first month after planting, every day. Water volume during irrigation, in normal conditions, should be a bucket per tree (in case of unfavorable factors, two buckets). In order for moisture to be retained in the soil, but not to stagnate, the soil in the near-trunk circle must be mulched: in winter with sawdust, in summer with peat.

Excessive watering and stagnant moisture for more than two weeks lead to decay of plant roots and contribute to the development of fungal diseases. With insufficient watering, the thuja turns yellow and dries.

Loves thuja and periodic sprinkling, especially in the summer heat. It is better to do this in the evening, so that drops on the needles do not provoke sunburn.

Feeding errors

Thuja feeds are useful, but in moderation. If fertilizers were applied during planting, then the next time the tree will need to be fed in two years. In the spring, the plant is fertilized with nitrogen compounds, at the beginning of summer with potassium. If the tree grows in poor soil, then fertilizers containing phosphorus will also be needed in the summer. However, it is worth remembering that excessive fertilization can cause root burns and yellowing of the shoot tips.

Important! In no case should you feed the thuja before the winter period. This is fraught with the development of various kinds of diseases.

Thuja can tell you what kind of substances it lacks with its appearance. So, yellowing or strong lightening of the needles is often due to a lack of iron. In this case, the thuja should be fertilized with a complex fertilizer, for example "Kemiroi Universal" or "Osmokot". If young tree suffers from a lack of phosphorus, its needles will turn red-purple, and with a nitrogen deficiency, thuja slow down growth and development, become chlorotic.

Wrong choice of place for thuja

When choosing a place for planting ephedra, it is necessary to take into account the fact that the tree grows well on drained soil consisting of sod land, peat, sand. Planting it in sandy, clayey or peaty soils can adversely affect the development of the plant, causing yellowing and shedding of the needles or drying out of the lower branches.

Did you know? In the wild, the most beautiful thuja grow on moist, fresh, slightly acidic or neutral soils in mixed forests.

For proper planting of thuja, you need to know one rule - the root collar should be at ground level, not deepened into it. It is not worth deepening the tree too much, this can lead to the dropping of the needles and rotting of the bark in the lower part of the trunk. In the future, it is necessary to ensure that the root collar is not completely bare, otherwise the appearance of the ephedra may also suffer because of this.

Thuja are also harmful to thickened plantings. In places where the branches of different trees will touch, the needles may turn yellow and fall off. The recommended minimum distance between seedlings is -1 m.

Thuja is a light-loving plant, therefore it must be planted on open areas... However, the first time after planting it is important to shade the seedling from the sun, otherwise the needles may lighten. It is advisable to choose a place for landing where direct sunlight will not fall on it at noon. Of course, thuja will not grow in full shade and will completely lose its attractiveness. Remember: the condition and appearance of the plant in the future will depend on the correct planting and choice of place.

How to cure thuja from disease

If you plant a tree, following the recommendations, you are sure that you are taking care of it correctly, but you notice that it turns yellow, looks lethargic or sheds needles, then the cause of such phenomena may be the defeat of the thuja by some disease characteristic of conifers.

Phytophthora is one of the most dangerous ailments of conifers, including thuja. If you start it, then it will be impossible to help the tree. The development of this disease can be recognized by the characteristic signs: the needles of the thuja acquire a gray color, the tree withers, the lower part of the trunk becomes soft and covered with bloom. The fungus that causes phytophthora affects the root of the bush, which becomes brittle, begins to rot and oozes bad smell... When such symptoms appear, when it is already clearly visible that thuja is disappearing, it will be too late to think about what to do. You will have to get rid of the tree, and change the ground under it, since the spores of the causative agent of the disease can exist there for a long time.

The main causes of late blight are stagnation of moisture and lack of drainage in the soil, as well as damage to the bark by larvae of wireworms and bark beetles. For the prevention of the disease use fungicidal spraying "Fundazol", "HOM", "Abiga-Peak".

Brown shoots

The yellowing of individual scales in early spring may indicate the development of a fungus on the thuja that causes brown shoots. As it multiplies, the entire shoot turns brown and dies. If such signs are found, infected branches should be deleted immediately.

For prevention purposes, the plant must be fertilized, and the soil under the trunk must be sprinkled with limestone.Also, every 14 days, from July to October, you can spray "Fundazol" (0.2%).

Rust and shute thuja

Common diseases affecting conifers are rust and shute, which mainly harm young trees. Ailments are manifested by a change in the color of the needles to a darker, brown one, with their subsequent fall. Black dots are formed on the needles - centers of sporulation. Diseased branches are cut and destroyed. For the purpose of prevention and treatment, the plant must be sprayed with copper-containing preparations (Bordeaux mixture, "HOM", "Oxyhom"). Also for the treatment of conifers, watering under the root "Fundazol" is used. Schütte is treated with Topsin-M. As a protection, regular mineral dressings are used.

How to deal with thuja pests

Tuyu can be damaged by a number of harmful insects. Their vital activity on a tree leads to serious damage to the needles, bark, and also provokes further development fungal diseases. So, sucking, needle-gnawing, root-damaging pests affect thuja.

The yellowing of the needles may be the result of the presence of aphids.These small gray-brown insects feed on tree sap on the underside of the shoots. If a small amount of them is found, weekly soap washing of the needles can help, but with mass defeat you will have to resort to using insecticides approved for thuja.

Important! When washing with soap, the soil under the thuja must be covered in order to prevent the soap solution from getting on the roots.

Spider mite

Already from the name of this pest, it is clear that the result of its vital activity will be a web. Tangling the needles with a web is one of the characteristic symptoms that a spider mite is raging on thuja.Also the needles are covered yellow spots, turn brown and crumble.

The spider mite can cause the greatest harm to plants suffering from drying out of the soil on hot days. This pest is very prolific and produces up to six offspring in a season, so the fight against it will require serious efforts.

For the purpose of prevention, it is necessary to prevent drying of the soil in summer seasonand also more often "sprinkle" the plants to maintain good humidity.

To get rid of the tick, spraying with infusions of dandelions, garlic or a solution of colloidal sulfur is used. In case of mass infection, acaricides will help.

Bark beetle

The presence of holes in the bark of a tree indicates the presence of stem pests. One of them is the bark beetle.

The leafworm makes cocoons between the needles, connecting them with cobwebs. It can eat needles for a month. Its harmfulness is very high, since this small insect can lead to the death of a tree.

For prevention and treatment, thuja is sprayed twice with insecticides: in May and in the first half of June. In case of severe infection, the treatment is repeated in July.

Trapping belts are used as preventive measures. They are made from burlap or straw and applied to the trunks in early spring. Such devices will not allow insects that woke up in the soil after wintering to get to the needles.

For minor lesions use mechanical method struggle - scutellum with a brush or a blunt knife, simply peeled off the bark. In advanced cases, insecticides are used.

The larvae of the moth moth leave behind brown needles and dying tips of the shoots. They gnaw small holes in the needles. To lay eggs, the speckled moth flies out in May, but it is difficult to notice it, since its size does not exceed 4 mm.

In order to prevent the moths from laying a clutch of eggs on the tree, in the second half of June - early July it is twice sprayed with preparations containing pyrethroids. The tops of the shoots will need to be cut off.

Thuja is also attacked by the wireworm, which damages the roots of the plant. As a result of its harmful activity, thuja's immunity is greatly undermined, it begins to lag behind in growth and development. The wireworm can also be the answer to the question "Why do thuja branches and needles dry?" Trees growing in low-lying areas with acidic soil and frequent moisture stagnation suffer from this pest.

The methods of struggle consist in deep autumn digging of the soil, its drainage and liming. The destruction of the wireworm is also facilitated by drugs with the active ingredient diazonin.

Thuja is so beautiful that it deserves to be planted everywhere. However, if your tree suddenly lost its former beauty, do not rush to bury it, but rather try to help. By identifying and eliminating the cause of the poor appearance of the tree, you can continue to enjoy the sight of the graceful and fragrant ephedra.

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Why do thuja turn yellow? Perhaps every second owner of evergreen shrubs is faced with this question. There can be several reasons for changing the color of the needles. To find out the true one, you will have to carefully observe the plants. So you can pinpoint exactly what happened to the fluffy beauties and start a "rescue operation".

Natural yellowing of the needles

Yellowing does not always indicate a serious problem. Sometimes this is a completely normal process. The point is that each needle has a lifespan. On average, 3-5 years. After the expiration of this period, the needles lose the chlorophyll grains, which are responsible for the green color, turn yellow and die off. After some time, in place of the old needles, a new one appears - fresh and green.

If you notice that on the inner side of the crown, individual needles fade and fall off, then most likely nothing terrible happens. It's just that the thuja changes the "fur coat".

Some varieties also change color with the arrival of autumn. So, thuja Holstrup, Brabant and Columna are painted in a light brown shade. Color change is a response to a decrease in temperature, allowing you to adapt to new conditions. In the spring everything returns to normal and the crown turns green again. If this does not happen, then the reason is different.

Columna thuja hedge

Planting and grooming errors

The second most common reason for the yellowing of needles is mistakes when planting seedlings and subsequent care for them.

The characteristics of the soil are of particular importance. Planting thuja on sandy soilthat is unable to retain nutrients leads to discoloration. Dense clay soil contains little oxygen, which is necessary for the full development of the root system. Weak roots cannot absorb the required trace elements in sufficient quantities, which also leads to the appearance of dry needles.

Peat areas with stagnant water are not the best place for planting. The roots, which are constantly in humid conditions, begin to rot, and this again affects the appearance of the thuja - it fades, turns yellow and crumbles. In case of surface bedding of groundwater, the arrangement of a drainage cushion is mandatory. Otherwise, the tarnishing of the needles and "baldness" of the branches cannot be avoided.

Yellowed thuja branch

In addition to the above, it leads to yellowing:

• excessive deepening of the root collar during planting, or, on the contrary, exposing it - the root collar should be at the same level with the ground;
• too tight fit. The distance between individual shrubs should be at least 1 m. The exceptions are cases when thuja are planted to obtain a hedge;
• a sharp change in the growing conditions. If the shrubs have been growing in the shade for a long time, and you have decided for some reason to transplant them in the sun, then get ready for the fact that the green "cap" may not be as bright as before;
• fertilizer abuse. Uncontrolled introduction of complex mineral additives is harmful - the needles turn yellow and become loose;
• lack of moisture. Insufficient watering negatively affects the general condition of the thuja. She starts to hurt and turns yellow.

Thuja changes color when there is a lack of iron in the soil. First, the needles turn yellow, then white.

Great harm conifers applied by pets. When cats and dogs regularly mark shrubs, it will damage the root system and develop a red bloom on the shoots.

Another common cause of needles yellowing is sunburn. Many varieties of thuja are sensitive to the spring sun, and if they are not protected with a covering material, then the end of winter will be marked for you by the appearance of yellow-orange burns on the branches.

Thuja seedling that died in spring from sunburn

Pests and diseases

If you have ruled out natural yellowing, improper planting and care, then proceed to a careful examination of the shrubs. Perhaps pests have settled on them.

The most common sucking pests are thuja false shield and aphids. The first is a small brown insect, no more than 3 mm in size. You need to look for it, or rather them, on the underside of the shoots. Aphids also live on the bottom of the branches. But they have a grayish color with a slight waxy coating.

Thuja branch affected by thuja false shield

Of the needles-gnawing pests, the most to be wary of is the speckled moth and the gray deciduous leaf roll. The moth is not difficult to see. Caterpillars do not even try to hide and openly gnaw passages in plant tissues. The danger of infection with a leaf roll is manifested in the fact that thuja not only loses its decorative effect, but also dies with a careless attitude. You can get rid of such "guests" with the help of preparations containing pyrethroids and sanitary pruning.

Another enemy of the thuja is the clicker beetle. The larvae of this insect feed on the roots of the bush. It is noteworthy that the process can take several years. At first, tiny larvae eat small thuja roots without causing significant damage, but after 3-5 years they become capable of gnawing thick roots. The needles quickly turn yellow, dry up and fall off. Digging the soil and processing with diazinon-based products will help to defeat the attack.

Click Beetle Larva

The yellowing of the needles can be associated with fungal diseases. Tinder fungus and Phytophthora cause not only a change in the color of the needles, but also softening of the bark, cessation of growth, drying out of shoots and rotting of roots. Fighting fungal infections is difficult. Sick shoots are cut off, "wounds" are treated with paint on drying oil, bushes are sprayed with preparations containing copper, but if the affected area is extensive, it is recommended to completely destroy the plantings and disinfect the soil.

Root system affected by late blight

Now that you know why thuja turn yellow, it will be easier for you to identify the true root cause and take action to preserve the natural beauty of this wonderful plant. Let your evergreen "wards" remain bright and extraordinarily beautiful!

Thuja is a durable and unpretentious plant, which, with its strict beauty, is ideal for any garden and will delight more than one generation of people. But even in caring for unpretentious green pets, some difficulties can arise. Let's deal with one of these problems - why the thuja turns yellow.

It may happen that scaly needles suddenly begin to turn yellow on your beautiful thuja. What to do? First of all, you need to find out the reason for the yellowing, and in our case, the reasons may be different.

Although thuja is a long-liver, its needles-scales have a shorter lifespan, namely, from three to six years. Having lived the period allotted to them, the needles grow old, lose chlorophyll grains, turn yellow and fall off, and young ones grow in their place. This is a normal, natural process and should not cause any concern.

Also a natural process is the seasonal change in the color of the needles of some types of thuja. This is due to the plant's adaptation to frosty winters and lack of light. In spring, when daylight hours increase and the process of sap flow begins, the color of the needles is restored.

For example, the basic (wild) varieties of folded thuja (Thuja plicata) and western thuja (Thuja occidentalis) in winter period become golden bronze. The decorative varieties Holstrup, Columna and Brabant take on a light brown tint. But the Smaragd variety remains deep green even in severe frosts.

Thuja folded
Thuja western "Columna"
Thuja western "Smaragd"

Incorrect fit

Thuja often turns yellow when the soil and planting site are incorrectly selected. Let's dwell on the main points that can cause yellowing.

When planting thuja, it is very important to choose the right soil mixture. On clayey, heavy soils, the roots will not receive oxygen and will not be able to develop normally. Sandy soil very quickly passes moisture through itself, and the plant does not receive enough water. The most suitable soil for this plant should be nutritious and light (a mixture of turf, sand and peat). Drainage is very important, as stagnant water is harmful. For the same reason, it is impossible to plant thuja in places where groundwater is located close to the surface.

An important point is the planting level of the thuja. With a strong deepening of the root collar, the trunk will begin to rot, and if it is not deep enough, the roots dry out.

It happens that a young thuja immediately begins to turn yellow, here the reason may be in a bad seedling. When buying, you should pay attention to the moisture content of the earth coma, the twigs should be elastic and flexible.

When planting these plants in groups (for example, a hedge or a high curb), you must strictly maintain the distance between them. The minimum gap between thuja is 1 meter. With strongly compacted plantations, thuja begin to hurt.

If you see the reason for the yellowing of your thuja in the correct fit, then it needs to be urgently transplanted in compliance with all necessary conditions, and then the tree will not disappear.

Improper care

Another reason why thuja turns yellow is mistakes in caring for it.

Diseases

The fact that your thuja has turned yellow may be to blame for some fungal diseases... Thuja are most often affected by them. In the course of the disease, they form brown-black growths or round spots on damaged tissues, in which spores develop. These diseases affect the trunk, branches and needles.

Schütte brown

For instance, shute brown in early spring, it envelops the branches of thuja with cobweb, dense mycelium of brown or gray... The needles also become brown, they do not fall off immediately, as they are glued together by this bloom. If urgent action is not taken, then the whole plant will undergo infection and die.

Another type of fungal disease destroys bark tissue. This leads to necrosis... Absolutely all of its parts are affected, while the bark often begins to fall off. The needles also change color. The change occurs first in separate spots, which then merge. Most often, trees weakened by unfavorable weather conditions (severe frosts, drought) are affected by necrosis. Diseased trees attract stem pests.

Some types of fungal diseases affect old, low-lying branches, while others - an exceptionally young growth. The fight against them consists in carefully removing damaged branches and treating them with fungicides. Moreover, it is necessary to spray it repeatedly with an interval of two weeks.

Root rot

A very dangerous disease of thuja is root rot... In this case, the fungus Phytophtora cinnamomi destroys the surface tissue of the young roots. The plant turns pale yellow and then dries up completely. The main symptom of this disease is changes in the trunk in the area of \u200b\u200bthe root collar. The bark in this place becomes softer, a plaque with light dots appears, and the trunk under the bark turns from cream to brown. Young thuja dies from this disease in one season. In a hedge, after a disease of one plant, mass infection is possible. Therefore, at the first sign of illness, the entire plant must be dug up and burned. And it is better to replace the earth in this place, since the spores of the fungus remain in the ground. Phytophthora fungi affect thuja weakened by heavy soils, so you should definitely take care of proper planting and caring for the plant.

Coniferous plants in the garden are a true decoration, bringing grace and severity to the landscape, possessing a magical ...

Pests

Thuja, like other conifers, have insect pests that form two main groups.

1. Sucking

A distinctive sign indicating the defeat of thuja by this type of insect is the appearance of a gray coating on the needles and a massive movement of ants along the plant.

- Thuye false shields they look like brown buds, and juniper scutes form growing yellowish ulcers. They are attached at the base of the shoot. BI-58 is well cured, as well as drugs such as Aktara and Lufox.

- Speckled moth... It becomes more active in May. Its larvae gnaw through the passages in the thuja scales, which leads to a color change and the death of shoots (the tip is most often affected). To combat moths, drugs are used, which include pyrethroids.

- Thuvaya aphid... It lives most often at the bottom of the trunk. It sucks the juice from the needles, this leads to yellowing and falling off the needles. It is necessary to spray with Karbofos.

Speckled moth
Thuvaya aphid

Mayfly bagworm

- Mayfly bagworm... Its caterpillars feed on needles and thuja twigs. Silky sacs are characteristic of this insect. yellow color (about 5 cm) hanging from branches. This insect causes massive dropping of needles, greatly weakens the plant, making it more accessible to other pests.

- Larch roll... The larvae of this insect damage the thuja needles, weaving them into small cocoons. The needles then turn yellow and fall off.

- Spider mite... The presence of a thin cobweb and small light dots on the needles of a thuja will tell about the defeat by this pest. If the lesion is very severe, then the plant turns white and becomes covered with cobwebs. You can fight the tick by repeated spraying with insecticidal and acaricidal preparations (for example, Aktellik, Envidor, Akarin, Fitoverm and others).

Weevil beetles (skosari)

- Weevil beetles (skosari)... In the spring, these insects eat up the needles and bark of young plants. And the larvae living in the soil feed on the roots. This causes browning or yellowing of the needles. To fight the larvae, the soil should be watered with an insecticide (for example, "Aktara", "Antichrushch"). It is also effective against beetles and larvae pollination of the soil around the plant with the drug "Confidor".

2. Stem

Thuy bark beetle

If the bark exfoliates on your thuja, and under it you find intricate holes and passages, then the plant is attacked by stem pests (bark beetles). In our case it is thuy bark beetle (Phloeosinus). It damages the bark so badly that the plant dies. In the damaged areas, small holes are visible, gnawed by the bast beetle.

The fight against bark beetles is very difficult. One of the means of struggle is pheromone traps. They attach to the tree and are used to attract these insects. When they flock to the trap, the tree is uprooted with them and burned. Antiferomones are also used; on the contrary, they scare off beetles. These substances are safe for humans and animals.

To combat stem pests, you can use drugs such as "BI-58", "Actellik", "Clipper", "Fufanon" and others.