Frozen thuja what to do. Thuja turned yellow after winter, what to do

After planting thuja in the garden you expect the tree to grow, begin to turn green, please the eye, but instead the thuja turns yellow after planting, perhaps in some places it also dries. Why thuja turns yellow after landingand what to do to reanimate it, you will learn in today's article. If the question remains relevant to you, continue reading.

Usually the thuja turns yellow for natural reasons, for example, in the fall, preparing for a state of rest. Any beginner grower understands that this is a completely normal process, but what about the noticeable yellowing of the Tui after planting in the spring?

Various factors can affect the yellowing of the thuja - acquired (improper care) or natural (changes in weather conditions).

Why thuja turns yellow after planting:

Lack / stagnation of moisture;
Unsuitable soil mix;
Illiterate care;
Changing weather conditions;

Moisture in the soil mixture is maintained depending on the type of components that make up the substrate for planting. When planting a thuja in open ground, you should follow certain rules:

It is best to plant thuyu in a drained turfy ground, flavored with sand and peat in moderate volumes.

Why thuja turns yellow:

Presence of groundwater, which lead to rotting of the roots and, as a result, disruption of the surface system.
Lack of moisture - thuja drying.
Thickened landing, lack of moisture, air and nutrients on each tree.
Excessive lighting and exposure to direct sunlight - a straw color is acquired, a noticeable partial yellowing in places of strong sun exposure.
Roadside TUI turn yellow from salts, components, reagents for cleansing.
Lack of nutrients - fasting on the background of insufficient feeding. In addition to yellowness, thuja acquires a brown, purple hue on the edges of the leaves.
Lowering the temperature or its jumps, the air temperature below -20 ° C - russeting and yellowing of parts of the thuja.

Thuja diseases: why the thuja turns yellow after planting

Pathogenic bacteria and fungi that destroy the root system and the bark of the thuja also cause changes in the color of the branches.

Tui diseases:

Brown shyutte (stormy snow mold);
Necrosis (fungal disease);
Stem rot;

Brown shutte settles on young Tui. The disease manifests itself in the spring, as soon as the snow melts. The fungus of the snow mold appears as black bloom, then point to the other branches. First of all, the thinnest shoots die off.

Necrosis of the bark tissue and the branches begins due to the defeat of fungi. First, the lower branches change color, after which the yellowness spreads to the upper shoots. Sporulation in the form of dark spots or gray-black tubercles (1-2 mm in diameter) are localized on the cortex. Mycelium spreads with an abundance of moisture.

The defeat of Tui may be due to the appearance stem rot. In this case, any change in the color of the tui for no other reason may indicate the presence of the disease.

It is sad to observe the appearance of brownish, yellowed, covered with a grayish bloom of evergreen thuja twigs. Why thuja turned yellow after winter and what to do. The gardener or the owner of the site on which the tree grows should take a responsible attitude to the manifestation of the disease state in the spring or autumn period of the year. The article provides information about what could cause the yellowing of the thuja and how you can help the tree recuperate and restore its former beauty. In more detail with the material will help to familiarize videowhich is at the end of the article.

Natural causes of thuja yellowing

The loss of decorativeness and yellowing of the branches of the thuja happens due to a number of reasons. This condition is typical for plants that do not receive proper care, in the soil there is a deficiency of nutrients and there are problems with the root system. A plant can have an unsightly appearance when it suffers from a disease or pests, and improper planting of thuja in open ground can also have a negative impact.

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

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

Tui have yellowing needlesdue to the natural defensive reaction to a cold snap in the autumn, after which the twigs turn green again.

The article below provides a description of each reason why the branches the thujas turned yellow after winteror at other times of the year. Information is also presented on the measures that must be taken to save and restore the decorativeness of the plant.

Important!Despite the reason why the top of the thuja has turned yellow, and the needles are dry, the affected areas should be cut. It is necessary to remove only the dried needles of the plant, because the twigs 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.

The reasons, why the thuja turned yellowand what to do

Recommendation! Each spring should be carried out preventive treatment of tui growth stimulant, you can use Epin or Zircon. Also, this procedure should be carried out if the plant has suffered from the sun's rays and burns.

To relieve the plant from the fungal disease, you can use the foundationolysis solution. For its preparation it is necessary to take the drug in the proportion of 10 grams per 10 liters of water. The first time it is recommended to process thuja immediately after landing. The procedure must be repeated further as a preventive measure.

Tip!At defeat of branches by a fungus, pruning of the shoot should be carried out 3 cm above the point of infection. After that, the cut must be processed with a 5% solution of copper sulphate.

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

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

Tui pests

Some species of ticks that settle on the needles of a tree can only be seen with a magnifying glass. If the shoots show small red insects of small size, then it can be said with confidence that the plant is affected by ticks. To get rid of pests by spraying needles "Fufanon" or "Aktellikom."
The needles in the spring season may acquire a reddish-brown hue and even become covered with a grayish bloom when sucking insects, such as tuevaya aphid, tuevaya pryashnitovka, mealy worm, moth, speckle, and juniper scale attack.

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

After that, in the summer, as a preventive measure, spray with “Rogor” or “Aktellik”. Abiga-Peak is also suitable for this purpose.

Also, the plant may be subject to attacks by the larvae of a deciduous leafworm, which provoke yellowing of the needles due to the fact that they form cocoons on the shoots.
Caterpillars of burlap bagworms eat greens.
Weevil beetles also cause significant damage to the plant, because they gnaw and damage the bark and conifer needles.
Tuva beetle, similar to fir-tree beetle, makes holes in tree trunks, which causes significant damage to the tree.

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

To carry out the treatment, which will allow to destroy pests, should be 2-3 times a month, observing an interval of 1 week. Spraying is best in the morning or evening. You should also be attentive to safety measures during spraying. Carry out this operation should be in a special protective suit and mask with a carbon filter.

As a feed you can use both home and commercial fertilizers. As an organic fertilizer, manure from cattle or bird droppings is used.

From the manure, you can prepare a solution for processing, it is necessary 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. The resulting liquid is recommended to water each tree, pouring the tool at the root

Conclusion

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

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

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Tui look very impressive in landscape design, but they need to provide competent care. Very often gardeners face a problem, they ask a question: thuja has turned yellow after winter, what to do? Let's see what could be the reasons for the yellowing of the crown of the thuja, and how you can cope with this scourge.

Sometimes the thuja becomes yellow inside. If you push the branches of pine needles, you can see this yellowing. We can say that this is the norm, because the needles change every season. Old branches, which are located inside the crown, are aging. Do not touch the dried twigs before winter, and in the spring you must manually clear the thuja from such branches. It is better not to use the tool, otherwise you can damage the plant. And any microtrauma will lead to infection.

In autumn, some types of thuja can change the color of the crown of the plant to yellow-green, and sometimes to brown-green. Therefore, if your thuja has changed color, do not panic right away. Perhaps thuja foliage or western thuja grows in your garden. In spring, when the snow melts, the soil will thaw, and in the trunk and branches of the tree sap flow will begin, the needles will again turn green. Many conifers prefer to change color, this is a kind of protective reaction of trees from the spring sun. For needles, spring burns can be devastating.

Severe frost can lead to yellowing of the needles. If the winter is not snowy and the frosts reach 30 degrees, cracks form on the trunks, on this side the needles turn yellow. It is difficult to insure against this. In regions with harsh winters, it is best to harbor thuja every year, and not only in the first year.

Other causes of yellowing of the crown

Thuja needles may turn yellow for the following reasons:

Over or under fertilizer.
Sunburn in the spring. Young thuja is very sensitive to the sun and changing weather.
Much or little moisture in the soil. With a lot of moisture, the top of the thuja turns yellow.
Diseases and pests. Yellowing can be caused by spurious shield, as well as fusarium disease.

Causes of thuja blackening after winter

After frost sometimes dark, almost black spots can be found on the thuja. There are two reasons for the problem:

This may be due to infection with a fungus. If the spots are small and small, you can limit the processing of the fungicide. It is carried out twice, making a break in two weeks. The areas that the fungus had time to hit, must be removed. With the defeat of a large part of the thuja, the tree should be removed, otherwise it will infect the rest of the landing.
If black spots are concentrated on the lower level of the tree, then pets that defecate on thuja are most likely to blame. If large parts of the tree are affected, the thuja will die; it must be removed.

How to return tue green look

After finding out the reasons for the yellowing of the needles in the thuja, the plant should be resuscitated.

Improper fit

Why does thuja turn yellow after planting? Novice gardeners often make mistakes when planting thuja seedlings. It is necessary not to deeply deepen the seedling, the root neck should remain at the level of the soil. When planting, it must be remembered that after several rains, the soil will settle, and the tree will sink a little more.

If the thuja suddenly began to turn yellow, you need to check how the landing site is selected correctly. Perhaps thuja grows in a damp place, or it is too dry. Drying, as well as excessive moisture, can destroy the plant.

With a lack of moisture, it is necessary to immediately water the plant, in addition to spraying. In that case, if the sun constantly falls on thuja, it needs a little shade. After that, you need the right watering, it is recommended to spray with Epin-extra.

What to do if on a site of stagnation of water? You can dig drainage grooves to drain water from the landing pit. But this is possible if the slope of the plot allows it. If it is not possible to arrange drainage grooves, arrange raised beds, which are transplanted thuja.

Fertilizer shortage

For proper development of thuja, it is necessary to observe the balance of micro and macro elements. Yellowness can cause a lack of manganese, copper, potassium or nitrogen. When detecting yellow areas on the needles, it is necessary to make an analysis of all the additional fertilizers in order to determine whether all the elements are sufficient in these fertilizers.
The leaves become pale green, the shoots cease to grow, which means that the thuja lacks nitrogen. Violation of nitrogen metabolism can cause potassium deficiency. Ammonia accumulates in the crown, which causes yellowing and further death of the shoots.
With a lack of copper and iron, the process of photosynthesis is disturbed, the needles of the thuja lose their green color.
The leaves may turn yellow due to chlorosis caused by a lack of manganese.

Diseases and pests

Many pests can cause thuja shoots to turn yellow. Especially annoying plants tuevaya aphid and motley moths. When detecting the first signs of damage to thuja, it is necessary to apply insecticides.

Schutte and tracheomycous wilting sometimes lead to the death of trees. And it all begins with the yellowing of pine needles. Then it becomes gray and brown. It is necessary to destroy the plant, otherwise the spores of the fungus spread to other plants. The soil should be treated with a fungicide.

For the prevention of fungal diseases, it is necessary to spray a Bordeaux liquid in the spring. When signs of the disease are sprayed the whole garden with a frequency of 15-20 days.

Sunburn

If there is a spring burning, the needles turn brown. Beginning gardeners do not even immediately notice it. First, the tops of the shoots just dry out a bit. But in May, the seedlings become pronounced brown. It becomes clear that the thuja is burned. The spring sun is too bright, it begins to shine and heat when the roots of the thuja are still in frozen soil. The plant does not receive a sufficient amount of nutrient juices, as a result there is a burn.

Even shelter with spandbond and lutrasil cannot always help. Sometimes this kind of shelter only hurts, because of the lack of air, shoots start to sting up. As a preventive measure, should be thoroughly shed thuja in the fall. In the spring it is recommended to water the plant with slightly warm water, not above 40 ° C, this will help to wake up the roots of the plant.

The most common diseases of thuja and methods of dealing with them

Not only pests are dangerous for tui. With improper care and watering, they can be subject to disease. It is necessary to consider the main ones: what are they typical for and how to cure their favorite trees.

Phytophthora

Phytophthora is considered the most famous and dangerous fungal disease of thuja. It is a root disease that destroys its upper layer. This is reflected in the appearance of the thuja as follows: it fades, turns gray, and the lower part of the trunk becomes soft to the touch. The fabric under the bark changes color to brown, and a patina will appear below. The root becomes brittle, with the smell of rot.

In general, the phytophthora affects the thuja growing on the ground, which is poorly drained, the water here often stagnates.

Treatment

To prevent phytophthora, it is often necessary to water with fungicides. If the disease still gets to it, and the roots have festered, the tree is best destroyed, and the earth replaced, since this fungus can live for a long time.

This is a fungal disease that appears in early spring. You can notice it on yellowed scales. In the late stage of development, the disease affects the entire shoot, and it dies off.

How to overcome?

To protect thuyu from this disease, it is constantly fed, and also sprinkled the roots with limestone. In the period July-October until October every 2 weeks, it is advisable to spray the Tui with Fundazol (2% solution). If you see at least one affected escape, it should be cut out immediately, and then the disease will not spread further.

If the bark is covered with yellow sores that gradually grow and grow - your tree has picked up a false shield. It is necessary to begin treatment immediately, otherwise this disease will lead to the fact that the spots will cover the entire trunk, and it will die.

How to treat?

In order to destroy the shielding, apply such means: Rogor, Karbofos, Aktellik, Antio.

There are also folk methods. To prevent this disease, you can wrap the trunk with straw or sacking. At the same time, the branches should be treated with a soapy solution on disodium alcohol (15 grams of soap, 10 ml of alcohol and 1 liter of warm water). Another way is to apply special glue from the tracks to the surface (this will not allow pests on it).

As soon as you notice quite a few larvae, try to just brush them off with a brush or a knife, without damaging the bark.

Shyutte and rust

Fungal diseases manifested by darkening and falling off of needles. They begin in the spring and are distributed year-round. Mostly young trees fall ill.

How to remove rust and shyutte? The best drugs for prevention

To stop the development of the disease, it is necessary to prune all the affected branches and burn them in order to prevent its spread to other coniferous trees. But this does not always help.

It is best to treat the affected trees with HOM. The consumption rate of the drug is 40 g / 10 l of water. This solution should be sprayed on affected trees twice per season: in the spring (in May) and in the summer when the disease reappears. Since both shyutte and rust are characteristic of all conifers, it is worthwhile to carry out preventive treatment of the remaining conifers (all, without exception). Carry it out with the same HOM in the same dose, but only once in spring.

If there is no effect, stern tree circles need to be spilled with Fundazole. The consumption rate of the drug is 20g / 10 l of water - you get a solution (0.2%), which spills the tree near the stem of the affected tree once during the growing season. No need to spray them with trees, only the soil to destroy the infection in it.

Topsin-M is also used from Schutte: the consumption rate of the drug is 15 g / 10 l of water, this solution is consumed for 1 adult plant. Spraying is carried out once in the spring after the threat of night frost has passed.

Instead HOM you can buy Bordeaux mixture. This is an old, but very effective and proven tool suitable for many cultures. Do not necessarily buy it.

Homemade Bordeaux Mix Recipe

It is easy to prepare it yourself. The bag contains lime and copper sulfate. So, for the preparation of ten liters of one percent solution, you need 100 g of lime and 100 g of vitriol.

Prepare it like this:

In vitro or glassware (in no case of iron or plastic!), Vitriol (copper sulfate) is diluted. To fill up to five liters of water, in another tank the same with lime;
Divorced vitriol gently poured into the slaked lime;
Shuffles It should be a light blue liquid;
In order to understand whether we have poured enough copper sulfate, you need to take an iron rust-free object (for example, a knife) and lower it to the bottom of our liquid. The appearance of red bloom means brute force;
Fix it easily by adding lime. You need to check, otherwise you can burn the plants.

This working solution can be used for preventive spraying every spring (during the growth of new needles) at the rate of 10 l / 100 m².

Total

Proper care and timely assistance will protect and cure your thuja from many possible diseases and pests. But it is also important to remember that shedding and yellowing of the needles does not necessarily signal the appearance of some kind of disease.

Thuja often changes color and drops the needles at the end of the vegetative period. Appearance can say that it dies. But in fact, it is simply preparing for winter, and changing the color of the needles is just its defensive reaction.