Often summer residents wonder: the thuja has turned yellow after winter, what should I do? A fading shrub is a very unfortunate sight. Moreover, such a state can even lead to death. To avoid losing your favorite tree, you should carefully inspect it and establish the reasons that led to the loss of decorativeness. When the essence becomes clear, the tree urgently needs to be saved. How to do this, this will be discussed further.
Thuja turned yellow after winter: what to do
If after winter the thuja turned yellow as a result of frostbite, then such branches are unlikely to be saved, most likely, they will have to be eliminated.
However, most often yellowing occurs due to insufficient watering. In this situation, the color of the tree can still be restored. For this, the plant is provided with regular watering. However, they do this with caution so as not to overdo it.
Fading tree
Why turns yellow in spring
So why does thuja turn yellow in spring and what to do? This happens for several reasons. The main ones include:
- inadequate care of the plant;
- defeat by a variety of diseases and pests;
- exposure to reagents that are designed to accelerate the melting of ice;
- intense car exhausts;
- natural causes.
Thuja dries: what can be done
Sometimes experienced gardeners hear from beginners: what to do - the thuja turns yellow and dries? As soon as the tree began to dry out, it was immediately necessary to begin to save it.
- It is necessary to cut off all the branches that managed to dry.
- The growth point is also cut off by 10 or 15 cm.
- Acid peat is poured under a bush in a thick layer (with a pH of 3-4).
- Together with peat, Bui coniferous is introduced under the plant. This remedy for 1 bush will need about 20 g.
- In spring, the plant is sprayed with epin, after two weeks zircon is used.
Thuya disease
The most common diseases of thuja, which provoke yellowing and wilting, and sometimes even its death, are various fungal infections. One of the dangerous diseases for thuja are rust, shute and late blight.
White coating on thuja
White coating on the shrub, which is accompanied by the appearance of yellowness and the gradual deformation of the branches, indicates a defeat by insects called hermes. These parasites are related to aphids. Hermes barely reaches a length of 2.5 mm, but is able to suck all the juices from the tree and destroy it. To prevent this from happening, pesticides use chemicals such as Actara or Commander.
Important! If we are talking about a western thuja, which grows in a pot in an apartment or house, then it is not recommended to use such drugs indoors. They contain toxic substances, so you need to spray thuja on the balcony and then with great care.
Hermes
Fungal diseases
Thuja is susceptible to fungal diseases, therefore when planting a tree in the ground, it is necessary to immediately take preventive measures to avoid future troubles. To do this, the bush during planting is treated with a solution of baseazole. You need to dissolve 10 g of the drug in 10 l of water, and it is ready for use. This treatment can be repeated several times a year.
For your information! If the thuja has dried branches, they need to be cut, and the place of cut should be treated with 5% solution of copper sulfate.
Bordeaux fluid will help to cope with fungal diseases. For preventive purposes, plants are treated with this substance twice a year: in early spring and before the first autumn frosts.
Causes of blackening of thuja after winter
It is not difficult to grow thuja, but in the process of its development, one can encounter not only yellowing of the needles, but also with its darkening. Thuja blackens after winter for two reasons:
- due to the aforementioned fungal diseases;
- due to exposure to feces of cats and dogs.
To establish the cause of blackening, it is necessary to carefully study the needles of the bush. When infected with fungi, the infection spreads gradually along the escape. The affected needles will not immediately blacken. First, it will get a brown tint.
In the case of animals, the shrub blackens only at the point of contact with the stool. In appearance, it resembles watercolor splashes, which are randomly scattered across the foliage.
Note! It also happens that the plant darkens immediately for two reasons - due to mushrooms and animals.
If there are no cats or dogs in the yard, then do not exclude the effects of bowel movements. Neighboring animals can invisibly resort to thuja. Needles that have suffered from their vital products will not recover. She will inevitably showered. If a small shrub grows in the yard and a large dog lives, then its bowel movements can destroy the thuja. If, on the contrary, there is a tall tree and a small dog, then only the lower branches can suffer.
To save thuja from animals:
- Rinse the branches with water. Maybe it will be possible to wash off the remnants of urine, in any case, this certainly will not harm the bush.
- The plant is fenced on all sides to block animals from access to it.
- The shrub is treated with repelling aerosols, which are sold in veterinary pharmacies. From home improvised means you can use ground pepper, which neither cats nor dogs like.
- Withered branches are cut.
- The shrub needs to help recover. To do this, it is treated with drugs that stimulate growth. Zircon or epin may be suitable, for example.
Zircon
Preparations for the prevention of rust and shute
Special care after winter is provided by a thuja with red needles, since in this case the tree can be affected by diseases such as rust or shute. Most often, these diseases occur in the spring and affect young trees. However, infections spread all year round and can affect plants of different ages.
Affected branches need to be eliminated, and the tree treated with fungicides that contain copper. Spraying is carried out in May and throughout the summer. If this treatment did not help, you need to use foundationazole. They are not sprayed with shrubs, but watered. Against shute use Topsin-M. Do it in the spring, as soon as the frost ends.
Phytophthora
Phytophthora is considered the most dangerous disease of thuja. This disease first affects the roots, and then the tree begins to fade and dry. Its trunk becomes soft inside and becomes covered with a coating.
Phytophthora develops in moist soil. For preventive purposes, soil is treated with fungicides against it. If the plant is already affected, then it only needs to be dug up and destroyed. Normal pruning will not help here.
Important! In the place where the thuja was, a young sprout is not planted for several years, since late blight is able to live in the ground for a long time, and the seedling will again be affected by this disease.
Why the thuja began to lose its decorative effect and began to turn yellow
Four factors can affect the decorative appearance of a plant:
- improper care;
- natural causes;
- thuja diseases;
- pests.
Wrong landing
Thuja may turn yellow due to improperly selected landing depth. Some summer residents too deep or expose the root neck.
Fertilizer shortage
Creeping thuja needs nutrients, however, it is also necessary to feed in moderation. An excess of minerals in the soil can negatively affect the appearance of the shrub.
As an organic fertilizer for thuja, manure is suitable. It is poured with water in a ratio of 1: 4 and insisted for about 14 days. On one tree you need 3 liters of such a solution. Such fertilizer cannot be poured onto the base of the barrel. They watered the soil around the tree.
Of the minerals, a biode or epin is used.
Epin
Important! The last top dressing is carried out in August. Then the plant prepares for winter holidays. He has a stunted growth process. If the sprouts are fertilized, they will continue to develop and die in the winter.
List of Natural Reasons Why Thuja Turns Yellow
Even if you follow all the rules and provide good care of the plant for a long time, plant it and grow it correctly, the needles can still turn yellow. The reason for this is natural factors:
- aging process. The life cycle of needles lasts from 3 to 6 years. After that, the tree discards its foliage. It gradually turns yellow from the trunk to the outside. There are very few such yellowed areas, because they are not very noticeable;
- change of seasons. Many varieties of arborvitae change their color to golden, red or brown. The exception is thuja smaragd, which, regardless of the time of year, remains green.
How to return thuya green look
To return to its former beauty, you need:
- ensure the correct watering regime, however, this must be done with caution, excessive moisture will also not benefit the tree;
- cut off damaged branches;
- timely fertilizer in the soil.
Note! If, when examining a tree, there are suspicions that the bush is affected by any disease or has been attacked by pests, it is necessary to carry out chemical treatment.
Thuja care if it has become red after winter
For thuja, as well as for many plants, spring burns are a great danger. Thuja after winter is very weakened, so continuous stay in the scorching sun is extremely undesirable. In addition, in the spring, snow still lies on the ground, from which the ray is reflected, just like from a mirror, and burns tender foliage even more.
To restore the bush, you need to build him a small shelter and provide moderate watering. After this, the thuja will surely grow new foliage, get stronger and completely find its natural color.
To avoid such troubles in the future, you should protect the thuja from the sunny side with material that will not let in the sun's rays, but will provide good air circulation. For this, you can use, for example, spruce branches.
Spring burn of needles
How to reanimate thuja after winter
Often after winter, there is a need to help the tree in its restoration. To do this, use the advice from professionals:
- they disclose the thuja, however, they put a shelter above it that will protect it from sunlight. Or you can cover the shrub with gauze;
- excessive moisture will not benefit the thuja, so water is removed from it with the help of grooves;
- the bush is treated with epin;
- when the weather stabilizes, dried branches are cut off.
Note! In such situations, summer residents are often lost and ask how to cut the thaw in the spring? The answer is quite simple: you need to give the plant a neat appearance. To do this, it is necessary to thin out the crown, and then they begin to trim it, giving shape. To make the crown comfortable to develop, cut off the branches that grow inward.
How to feed thuja
How to feed thuja so that the shrub quickly grows and flutters? It is necessary to make fertilizers for thuja from yellowing. It is necessary to feed the plant with ammonium nitrate. For such a solution you need 1 tbsp. spoon of saltpeter in 10 liters of water. Before fertilizing, the soil is watered with water, and then a saltpeter solution is added to the soil. This procedure is carried out only in the spring and after it no longer needs to use any fertilizers.
What else to fertilize thuja in spring
In spring, arborvitae need fertilizers that contain nitrogen. Also, the bush needs macro- and microelements. You can use different top dressings, which are available in liquid form, in the form of granules or powders. The main ones include: azofoska, platon, compo, multivit and others. It should be borne in mind that most of these drugs release beneficial substances into the soil for three months, so fertilize the soil with these means only once a year.
Pests
Despite the fact that the thuja has a strong immunity, it still can not resist some diseases and pests. The most dangerous parasites that do not mind eating it are spider mites and mottled moths.
Spider mite
The spider mite is small, so it is difficult to notice. Mostly green parasites are found, sometimes you can see orange or red individuals. The main sign that this parasite attacked tui was a spider web.
Spider mite
Insects breed quickly, six generations may appear during the summer, they will quickly suck the juice from the arborvitae, and it will dry out. To avoid the death of the bush, you need to start treatment at the first symptoms of the lesion. If there are few parasites, and they have just begun to appear, then you can use tinctures of dandelion or garlic. In advanced situations, it is necessary to treat the shrub with chemicals. In the fight against spider mites, actellik, phytoverm, neoron, skelta, etc. are suitable.
Speckled Moth
Brown needles or the death of the apex in the thuja often occurs due to the larvae of the moth. To lay their eggs, the parasite gnaws at the foliage of the needles. It is very difficult to notice the pest due to its small size. Speckled moth barely reaches 4 mm.
Note! To prevent masonry, thuja at the end of June is sprayed with drugs, which include pyrethroids. It can be anti-tick mosquitol, anti-tick tornado, etc.
If a yellow thuja grows in the yard, do not immediately get upset. In any case, whatever happens to the shrubbery is not a reason to wave a hand at a tree and calmly watch how it dies. In most cases, it can be cured. Every effort must be made so that this green perennial regains strength and again pleases the eye with its greenery.
