Thuja leaves dry. Thuja turned yellow after the winter, what to do. Measures necessary for nursing thuja

Thuja is a plant of the genus Gymnosperms, the Cypress family, an evergreen shrub, in exceptional cases a tree reaching 7 meters in height, trunk girth - from 2.5 meters. The leaves of young plants are soft, needle-like, in older plants they are crosswise opposite, scaly.

The plant is monoecious, not demanding in cultivation, perfectly tolerates severe frosts, poor ecology of industrial cities. Thuja is grown in gardens, in the country, on city streets and parks, at home.

In nature, there are 6 main types of thuja, there are a lot of varieties (more than 120 varieties), each of which is beautiful and unique in its own way.

Possible causes of yellowing needles

Problems such as changing the color of the needles, the appearance of an ugly yellow or brown color are not uncommon in growing this plant. The question of why thuja turns yellow in summer and what to do worries many gardeners. The appearance of yellow needles indicates a problem, and if it is not eliminated in time, the tree will begin to dry, shed its needles and then die altogether.

It is important to understand why the thuja dries what to do.

Lack or excess of light, moisture

With a sharp change of residence to more sunny areas, if the seedling had previously grown in a dense planting or in a shaded place, the appearance of yellowness in the plant in the first couple of days is inevitable.

The thickened planting of the thuja can cause yellowing of the foliage on a volumetric scale, the immediate contact area of \u200b\u200bthe foliage of neighboring bushes turns yellow, as well as lower branches that lack sunlight.

Thickened planting of thuja can cause yellowing of foliage

Perhaps the thuja turned yellow due to insufficient watering, which, absolutely, like excess, negatively affects the needles. The high occurrence of groundwater, which negatively affects the root system, causes jamming, rotting of the roots and, as a result, yellowing of the foliage.

Lack of nutrients in the soil

Iron deficiency in the soil can lead to yellowing or even whitening. Lack of nitrogen is manifested by the appearance of various kinds of spots: yellow, brown, brown or whitish. The lack of phosphorus is reflected by the appearance of a red-violet hue on the needles.

If plants are planted too close to each other, there is a shortage nutrients, since the powerful root system of each of them "pulls upon itself."

Perhaps there is not enough space for the overgrown root system of the plant. Often this situation occurs 5-7 years after planting.

Yellowing before molting

The needles are able to turn yellow before “molting” - this process is not annual, with it the tree sheds part of the old needles. Outdated needles (3-6 years, depending on the species) are distinguished by yellowing coming from the inside: from the trunk and skeletal branches to external parts crowns, it is hardly noticeable and is not of a massive nature; this happens, as a rule, in late autumn.

Pests

Aphid

The appearance of this pest is also characterized by yellowing of the foliage, its drying and falling off. If you do not start the fight against aphids in time, then the whole tree will die.

Thuja mining moth

spider mite

When infected with a tick, individual thuja needles become covered with yellowish spots, over time they turn red, turn brown and fall off. The needles are covered with small cobwebs, this is especially evident by the end of summer.

leaf roller

The thuja needles damaged by the larvae of the gray larch leafworm turn yellow.

Thuy beetle

Yellowed needles can signal a defeat by a thuja beetle, or by a Crimean thuja beetle. Its presence is betrayed by the presence of inlets in the bark and passages on the wood.

Diseases

Plant diseases occur, as a rule, with improper care. Often thuja is susceptible to fungal diseases. In a sick plant, the needles begin to turn yellow and fall off.

The natural process of needle renewal and color change as the seasons change

If in the spring the needles turned yellow or acquired a bronze tint, then perhaps this is just a natural process of updating the needles and changing color when the seasons change. If, in addition to the needles, shoots also have an abnormal appearance, then most likely this is some kind of problem.

For example, varieties of thuja western and folded for the winter acquire a golden-bronze color, such yellowing is not a pathology.

There are also varieties with yellow needles from nature: thuja western Danica Aurea, Sunkist, Klot of Gold.

Disease prevention

Often, thuja is susceptible to fungal diseases (brown shoots, rust, shute, phytophthora), the fight against which involves the use of antifungal agents (Fundazol, HOM, Topsin-M). Some diseases, such as phytophthora, are useless to treat, the plant is dug up and burned. The following preventive measures help to avoid infection with various diseases or significantly minimize the risks of their occurrence:

proper watering, which depends on the climate, soil and plant age;
timely top dressing (mineral and organic fertilizers);
sunburn protection;
regular pruning and removal of diseased shoots in the spring;
systematic loosening and disinfection of the soil near the trunk circle;
weed removal;
warming for the winter of young seedlings.

Care instructions

Recovery of dried thuja

If the thuja turned yellow, what to do, how to reanimate it? You can help the plant if the foliage is completely or partially dried up, and the root system is functioning. If the root is dead, then no way to save the thuja will help.

To begin with, each branch of the tree must be carefully checked whether it is alive or not, for this it is bent in different places: living ones are elastic, dead ones are dry and brittle. The damaged ones are removed, the sections are smeared with pitch.

A dried plant must be sprayed daily with water with the addition of Epin, an excellent drug to improve the immune system. The solution is sprayed directly onto the crown. Depending on the scale of the affected area, spraying is carried out every day, or once a week.

An outdoor plant is covered with lutrasil to protect against sun rays and excessive evaporation of moisture, directly in the summer. If this indoor plant, then a pot with it is installed in a mini-greenhouse.

On a note. It will not be superfluous to make top dressing with special fertilizers for conifers.

If a young tree has dried up, a transplant will help.

If a young tree has dried up, a transplant will help - perhaps the reason for the extinction of the plant is in the wrong place, the soil. During transplantation, the root system is examined for possible affected, rotten roots. If necessary, treat with Kornevin.

Resuscitation of a dried thuja takes a long time, the plant can recover for several years.

Leaves dry: causes and their elimination

If the thuja turns yellow and dries up, decide what to do, how you can help, as soon as possible, otherwise the plant may simply die. The first step in resolving a problem is to identify the root cause.

There are a lot of reasons why thuja dries:

pests;
illness;
burn;
an excess of applied fertilizers;
insufficient or excessive watering;
bad care.

The fight against them is as follows.

Pest control chemicals are used. If the thuja is infected with a false shield (small insects 3-5 mm, located on reverse side needles, cause drying and wilting of the plant), apply Commander, Champion, Decis. When spider mites use Aktofit, Aktellik.

Diseases in which thuja is able to dry out and wither: late blight, brown shoots and fusarium. With late blight, there is no chance of a cure; fungicides are used for prevention. Drying and subsequent death occurs with brown shoots, while the affected areas are eliminated, and the tree is systematically sprinkled with limestone, for prevention, from mid-June to the end of September, the tree is sprayed with foundationol. From fusarium, watering under the root of a 0.2% solution of foundationol helps.

If the cause of the burn, in which the needles turn brown, is not eliminated, then most of the plant may dry out over time. The following protection measures are taken:

the trunk circle is covered with peat chips and ash to reduce the reflection of sunlight;
use of special means to obtain shading.

When overfeeding the thuja, it is practically impossible to help, it is necessary to wait for time and stop fertilizing the plant for now.

Important! Fresh manure is absolutely not suitable for top dressing, it will ruin the entire plant.

Thuja dries up how and what to do at the same time - this is a question that needs to be raised at the most early stages plant damage. Large foci of yellowed or dried needles cause great damage to the entire plant, and perhaps no rescue manipulations will help. The main thing is to provide the thuja with proper, complete care, then such a problem as yellowing of the needles will never appear.

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

Now it has become very popular to plant such coniferous plant like thuja. Therefore, in the article we will analyze in detail why the thuja needles (its leaves) turn yellow, 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) turn yellow in the thuja, and not only the needles themselves, but small branches begin to fall off. These are needles that grew 3-5 years ago and have fulfilled their function, and because of the new needles, they get little sunlight.

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

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

too deepened the root;
the root neck remained exposed;
the wrong landing site was chosen: too sunny, windy, groundwater is far away, with unsuitable soil.

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

It is mandatory for a newly planted tree to install a fence to prevent animals from defecation on it.

5. Pest damage or disease. Fusarium, thuja brown and cytosporosis are considered dangerous diseases for thuja. To prevent them, after planting, thuja should be treated with a solution of foundationazole (10 g per 10 l of water) or.

Damage to the plant by thuja aphids and thuja false shields 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 (the so-called leaves) of the thuja turn yellow, you can save the whole tree from death.

My husband and I planted a beautiful thuja as a hedge in a summer cottage. They thought that there would be no worries with her - they planted it and that's it. But the winter passed and we noticed that this evergreen thuja suddenly turned yellow, and in some places it even turned brown! Not immediately, but we were able not only to identify the cause of the disease, but also to cure our thuja.

Now she pleases us again with her healthy and well-groomed appearance! In this article, I want to tell you what thuja can get sick after winter, how to cure it, how to protect it from diseases and pests in the future. Then your thuja will all year round delight with its evergreen beauty!

First you need to find out if annual yellowing is normal for your thuja variety. There is a variety of thuja, in which the needles darken before the onset of the winter season, thus preparing for winter in order to more easily endure the cold. With the onset of spring, it returns to its green color again.

If you notice that the thuja periodically turns yellow at the bottom of the crown, then do not be alarmed, this is a natural process for her. In this case, it will be enough to remove the yellow processes.

If you often water the thuja that you recently planted, and also move the pot with it around summer cottage or put under the scorching rays of the sun, then it will turn yellow very soon.

And also pets can damage it by digging to its roots or nibbling its needles. Therefore, it is undesirable to let animals near the young thuja.

spring sun rays

One of the main reasons for the yellowing of thuja needles may be the spring sun, whose rays are reflected from the snow that has not yet melted, thereby increasing its intensity. It is not surprising that the thuja, only waking up from the winter cold, often gets a sunburn in the spring.

She can only be saved with the help of a covering material that will protect her from the sun's rays. As a covering material, you can use any burlap, spruce branches or kraft paper.

It is desirable to cover it at the end of winter, if there is not enough covering material for the entire shrub, then the thuja can only be covered from the sunny side. But do not close it completely, it must have access to air.

If she has already received a burn, then in this case she needs to be hidden in the shade and watered more often. Over time, it will definitely increase the needles and return the original green color.

fungal diseases

Like many plants, conifers are also subject to fungal diseases, from which their needles can turn yellow and fall off. Therefore, first of all, after planting the thuja in the soil, it must be treated with an antifungal solution from foundationol.

Ten grams of the drug is poured into a ten-liter bucket of water and mixed well. It is advisable to periodically water the thuja with this solution. But it can be replaced with Bordeaux liquid.

brown shoots

This is the name of the fungus that causes brown shoots. When the thuja is affected by this fungus, it turns brown very quickly. In this case, it is important to notice the disease in time and immediately remove the infected branches.

Then add fertilizer under the root and sprinkle limestone on top. After every two weeks from June to November, the entire crown of the thuja should be sprayed with 0.2% "Fundazol".

Rust

It often affects young needles, only recently planted. The needles acquire a dark brown color and are covered with red dots. In this case, the affected branches must be cut and burned. And treat the plant with copper-containing preparations.

So that rust does not affect thuja in the future, it is advisable to periodically treat it with this drug. Additional watering under the root "Fundazol" will not interfere.

Phytophthora

This is the most dangerous fungus that completely destroys a coniferous plant. During this disease, the needles turn gray, noticeably fade, and the trunk, which is most affected, becomes soft to the touch and covered with bloom.

If an unpleasant smell appeared from the shrub, then this is a signal that the fungus has already penetrated the roots. In this case, the plant must be pulled out and destroyed. After that, the earth must be carefully treated from spores of the fungus so that neighboring plants do not get sick.

Therefore, during the planting of the thuja at the bottom of the pit, there must be drainage, which does not allow moisture to stagnate in the soil. So that the thuja is not affected by this fungus, it must be periodically sprayed with "Fundazol".

Pests

In addition to fungal diseases, thuja, if not cared for, can be attacked by pests from which it can die.

In this case, you need to carefully examine the branches and needles of the thuja with a magnifying glass, since insects are often very small and difficult to notice with the naked eye.

bark beetle

leaf roller

The presence of a leaflet on the thuja is evidenced by small cocoons attached to the needles with the help of cobwebs. This very small insect can easily destroy a thuja in a month, feeding on it. To get rid of the leafworm, you need to treat the affected shrub with insecticides in May, June and July.

False shield

If on the underside of the needles you find yellow-brown small insects, no more than three millimeters in length, then this is a false shield, the most dangerous pest that short term can destroy an entire bush.

If there are few of them, then it is simply brushed off with a brush from the branches and bark. And if there are a lot of them, then only spraying with insecticides will help. To false shield in early spring, as soon as the snow melts, it does not attack the thuja, the trunk is wrapped in burlap.

Moth moth

Thuja does not feed on the moth itself, but on its larvae, which it lays in the needles. The larvae themselves are very small, not exceeding four millimeters.

She usually lays her eggs in June, therefore, in this month and July, the shrub must be sprayed with preparations containing pyrethroids so that the moth does not settle on the thuja. But if the thuja has already managed to attack the thuja and damage the top of the shrub, then it remains only to cut it off, and treat the rest of the crown with the preparation.

spider mite

If the needles turned out to be entangled in cobwebs, and small red insects run along the branches and needles, it means that it was attacked by a spider mite, an incredibly prolific pest that is difficult to get rid of.

It appears on plants suffering from drought in hot summers and sucks the last juices out of them.

Therefore, so that the spider mite does not visit the thuja, it must be watered in the hot summer. To get rid of the tick, the plant must be sprayed with tincture of garlic. But if the tick has already managed to reproduce a huge offspring, but in this case only acaricides will help.

wireworm

If you notice that the thuja began to get sick often and stopped growing, its branches began to dry out, look at its roots, it is likely that you will see small golden worms there. This is a wireworm that harms the roots of a shrub, destroying its immunity.

To get rid of the wireworm, in late autumn you need to dig up the soil around the plant, drain and deoxidize the ground. If there is a lot of wireworm, then it is mixed into the soil with products containing diazinon.

Aphid

If numerous small gray-brown insects were found on the shoots, then this is an aphid that loves to feed on the sap of a tree, bringing it to a state of drying.

If there are not very many aphids, then you can get rid of it by washing the needles with soap. This should be done weekly, covering the soil with a waterproof film so that the soapy solution does not penetrate the roots.

If there are a lot of pests that even washing does not help, then spraying the bush with any insecticides will help get rid of them.

So that no insect pests want to settle on your thuja, at the end of spring, as soon as the snow melts, it is advisable to spray the conifers with Fufanon.

Spraying should be repeated twice a month until late autumn. In hot summers, it is better to spray early in the morning or late in the evening. And do not forget to put on a protective suit and cover your face with a protective mask while spraying.

Landing and care

Many novice gardeners make the same mistake in planting a thuja, placing its basal neck too deep in the ground or leaving it on fresh air. And even completely forget about the drainage at the bottom of the pit. Because of this, the immunity of coniferous shrubs falls, and its roots are affected by rot.

It is also undesirable to plant thuja next to groundwater, since its roots will rot, this will lead to drying out and dying off of the branches. Thuja is not a moisture-loving plant.

Thuja is not recommended to be planted too close to each other, as they will touch the branches and feel crowded, and therefore they can stop their own growth and throw off the needles. The distance between them should be at least a meter.

The soil for planting should not be too dense, acidic, wet, poor in minerals. The soil should consist of sod land with the addition of peat.

If the above mistakes were made, then it is better to transplant a coniferous plant into a more a good place And don't forget drainage. The first time after transplanting, it is better to cover it from the scorching sun in order to allow the plant to calmly adapt to a new place.

And be sure to mulch the ground around it with sawdust or peat. Water once a week for the first month, and then less often.

Some summer residents do not know what to do if the thuja has turned yellow, and what is the reason, so they are perplexed when such a problem occurs. If nothing is done, she will die. There are several ways to get out of this situation.

What caused the yellowing of the thuja

The yellow color of coniferous needles does not always indicate a disease, sometimes it is the fault of the gardener himself or the influence of an environmental factor.

Source: Depositphotos

What to do if the thuja turned yellow: rational watering and proper feeding will decide everything

The color of a tree can be:

due to seasonal changes;
improper care;
natural processes;
incorrect landing;
damage by harmful insects and diseases;
animals.

During winter, frost thuja may turn yellow. So it reacts to temperature fluctuations. Everything is back to normal in the spring. If it is planted in the sun, then a common cause is burns. Do not forget that after 5-6 years the needles die off, since nothing lasts forever. Some parts turn yellow and fall off, new ones grow in their place. If the soil in which the thuja grows is sandy, clayey or peaty with stagnant water, then the plant will sooner or later begin to deteriorate. The best soil composition is soddy soil with sand and peat.

Thuja loves moisture, but not excessive waterlogging. In the first case, yellowness appears due to drought, in the second, the rhizome rots. It is impossible to allow the deepening of the root neck, it should be located on a par with the surface of the earth. Planting thuja nearby is contraindicated, lack of light and space will destroy them. Excessive fertilizing or lack thereof also adversely affects the plant.

Often the feces of animals near the tree, as well as the invasion of fungal diseases and aphids, lead to yellowness.

How to save thuja

To avoid changes in growth, development and appearance Tui, first of all, choose the right seat. Partial shade, in no case a sunny area. During planting, do not deepen the root collar. To prevent the invasion of harmful insects, treat the plant with an insecticide in early spring. Suitable "Aktellik", "Aktara" or "Engio".

To prevent diseases or stop them, use:

Bordeaux liquid;
solution blue vitriol 5% - branches are sprayed or lubricated;
fundazol - diluted 5: 5.

Processing is carried out in spring and autumn.

Regular and proper watering is important. In drought - twice a week, using 15 liters of water. On a normal day - 1 time, 10 liters.

Fertilize also in moderation, 4 times is enough for the period from April to August. To do this, fill the manure with water (1: 4) and leave to infuse for two weeks. For one thuja - 3 liters. Alternate such top dressing after 3-4 weeks with complex mineral fertilizers- "Epin", "Bioud" or "Idol-wagon".

So that the tree does not acquire yellow, monitor the condition of the soil, the regularity of watering, carry out preventive spraying with special preparations from pests and diseases.

It is sad to observe the appearance of brown, yellowed, covered with a grayish coating of evergreen thuja twigs. Why did the thuja turn yellow after the winter and what to do. The gardener or owner of the site on which the tree grows should be responsible for the manifestation of a painful condition in the spring or autumn period of the year. The article provides information about what could cause yellowing of the thuja and how you can help the tree regain strength and restore its former beauty. It will help to get acquainted with the material in more detail video located at the end of the article.

Natural causes of yellowing thuja

The loss of decorativeness and yellowing of thuja branches occurs due to a number of reasons. This condition is typical for plants that do not receive proper care, nutrient deficiencies form in the soil and problems with the root system appear. The plant may look unsightly when suffering from disease or pests, also Negative influence may have an incorrect landing of thuja in open ground.

Healthy ! In autumn, thuja needles may turn yellow for a natural reason - due to the loss of chlorophyll, which provides nutrition to the needles.

The needles turn yellow, dry up and die off, after which a new young needle appears in the same place. This process occurs with the plant every 3-6 years and is natural. life cycle thuja.

Tui has yellowing needles due to the natural protective reaction to a cold snap in the autumn, after which the branches become green again.

The article below provides a description of each reason why twigs thuja turned yellow after winter or at other times of the year. Information is also provided on the measures that need to be taken to save and restore the decorativeness of the plant.

Important! Despite the reason why the top of the thuja turned yellow, and the needles are dry, the affected areas should be cut out. It is necessary to remove only the dried needles of the plant, since the branches can still be covered with fresh greens. It is not recommended to leave yellow needles on the plant, as this can lead to the death of the tree.

Causes, why did the thuja turn yellow and what to do

Recommendation! Every spring, prophylactic treatment of thuja with a growth stimulator should be carried out; Epin or Zircon can be used. Also, this procedure must be carried out if the plant has suffered from sunlight and received burns.

rid the plant of fungal disease can be done with a base solution. To prepare it, you need to take the drug in a proportion of 10 g per 10 liters of water. The first time it is recommended to process the thuja immediately after planting. The procedure must be repeated for preventive purposes.

Advice! If the branches are affected by the fungus, pruning of the shoot should be done 3 cm above the site of infection. After that, the cut must be treated with a 5% solution of copper sulfate.

Tui, recently planted, are susceptible high risk infestation with brown schütte immediately after winter, when the snow melts. The disease is manifested by a change in the color of the needles to brown, subsequently the branches become covered with a gray-black coating. Therefore, in early spring, for preventive purposes, the plant should be treated with phytosporin.

Watch the video! Why does thuja dry in spring? What to do in this case?

Tui pests

Some types of ticks that settle on the needles of a tree can only be seen with a magnifying glass. If red insects are visible on the shoots small size, then we can say with confidence that the plant is affected by mites. You can get rid of pests by spraying Fufanon or Actellik needles.
The needles in the spring season can acquire a reddish-brown hue and even become covered with a grayish bloom when it is attacked by sucking insects such as thuja aphid, thuja false shield, mealy worm, moth, moth, juniper scutellum.

In order to rid the plant of these pests, it is necessary to treat the thuja with karbofos in the spring.

Then in the summer, as a preventive measure, spray with Rogor or Actellik. For these purposes, "Abiga-Peak" is also suitable.

Also, the plant may be susceptible to attacks by larvae of the deciduous leafworm, which provoke yellowing of the needles due to the fact that they form cocoons on the shoots.
Caterpillars of the bagworm eat greens.
Weevil beetles also cause significant damage to the plant, as they gnaw and damage the bark and needles of the thuja.
The thuja beetle, similar to the spruce beetle, makes holes in tree trunks, which causes significant harm to the tree.

In order to get rid of these pests, the conifer should be sprayed in late spring - early summer. For the procedure, you will need drugs: "Fufanon", "Aktellik", "Confidor".

To carry out processing, which will destroy pests, should be 2-3 times a month, observing an interval of 1 week. Spraying is best done in the morning or evening. You should also be careful about safety measures during spraying. This operation should be carried out in a special protective suit and a mask with a carbon filter.

As a top dressing, you can use both homemade and purchased fertilizers. As organic feeding manure from cattle or bird droppings is used.

From manure, you can prepare a solution for treatment, while you need to dissolve 2 kg of manure in 10 liters of water, and then remove the resulting composition in a dark and warm place for 14 days. After that, the solution must be diluted with water again. It is recommended to water each tree with the resulting liquid, pouring the product under the very root

Conclusion

Yellowing of thuja needles can be due to several of the most serious reasons, such as: improper plant care, attacks by viruses and insects, a natural age reaction. The tips presented in the article will certainly help to cope with all the ailments from which the tree suffers.

Watch the video! Why does thuja turn yellow and how to save it?

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