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Thuja is a popular coniferous evergreen tree or shrub belonging to the cypress family. Preparation for the winter of such conifers should be started before severe frosts.
Features of autumn thuja care
The main measures for the care of ornamental plants in the autumn period are aimed at strengthening immunity and preparing for winter frosts. In order for the conifer to easily survive the winter, it must be provided with the correct agricultural technology.
Thuja watering mode in the fall
The crop planted in the autumn period needs irrigation and sprinkling in volumes equivalent to spring seedlings. Young plant needs a lot of moisture, which has a positive effect on wintering. If in the fall there is a sufficient amount of precipitation, then irrigation should be reduced to almost a minimum or stopped completely.
Too much moisture, which for a couple of weeks affects the root system of the plant, often becomes the main cause of damage to the culture by pathogenic microflora or death.
Thuja trim scheme and technology in autumn
Trimming should be done exclusively in dry weather. The aerial part can be cut off with a pyramidal, columnar or spherical shape, and the Smaragd variety is most often used for spiral and chess garden pieces. A preliminary inspection of the crown is preliminarily performed, and a visual determination of the desired shape of the aboveground part of the conifer is performed.
You can not trim the branches immediately after rain, as in this case there is a risk of pests and various diseases appearing on the crown. To give an arch and rectangular shape, special blanks or twine are used. All tools used for trimming must be sharp and clean.
The rules of autumn feeding thuja
Fertilizing the plant directly after planting in a permanent place is absolutely not necessary if all the appropriate fertilizing and fertilizers have been introduced into the planting pit. The best option is top dressing in spring or summer.
In areas characterized by poor soils, plants need to be fed with high-grade complex fertilizers. In the autumn, feeding plants is not recommended, since in this case there is an excessive development of shoots and twigs that do not have time to fully form in the winter cold. Such conifers often die in severe frosts.
How to clean thuja in the fall
Thuja preparing for winter
When preparing a conifer for winter frosts, it is very important to adhere to standard terms, which vary depending on soil characteristics and climatic conditions in the region of growing ornamental conifers.
How and when is thuja hiding for the winter
Before deciding whether to use shelter in the winter, you need to determine the age and time of planting the conifer. If an ornamental plant was planted in the spring or summer of the current year, it belongs to the category of young and needing protection crops.
Adults and strong plants can do without shelterif planted in the shade of large-sized or near a house and high fence. Be sure to cover the aboveground part of the bush at a temperature regime below -35 ° C. To protect the crown, light and air-permeable so-called “breathable” covering materials or traditional burlap should be used.
Why and how to tie a thuja in the fall
In preparation for winter snowfalls, the crown of young and adult thuja is required to be tied very carefully using a nylon rope or twine, which will prevent the breakdown of fluffy branches under the weight of the snow mass. Bandaging the crown of the conifer should not be too tightbut very weak tying is absolutely ineffective.
Thuja root system preparation for wintering
The root system of the thuja, regardless of age, is characterized by compactness and a fairly superficial location. Due to its botanical features, the roots of the conifers are able to freeze in too frosty and snowy winters, as well as overheat in the hot summer period.
To prevent freezing and overheating, it is necessary to perform high-quality mulching of the soil in the autumn and spring. Such an agrotechnical technique also allows you to save a sufficient amount of moisture in the surface layers of the soil, well supports the soil in a loose state, and also prevents too active growth and development of weeds.
Digging and mulching trunks
Shallow digging and loosening with subsequent mulching of the soil can greatly facilitate the maintenance of decorative crops. Such events must be carried out without fail, not only in the early spring, but also with the onset of autumn.
Under the mulch, the soil crust does not form, and the soil itself receives effective protection against erosion during irrigation activities. Mulching can be done with garden compost, fallen leaves, lowland peat, wood chips and sawdust, as well as other organic components.
Autumn problems and methods for solving them
Failure to comply with cultivation technology and irregularities in the care regimen often causes problems in the autumn period. A diseased plant may shed needles or become very yellow.
How to trim thaw in the fall
For what reason thuja drops needles in the fall
There are several reasons for the collapse of the needles, but the most common and easily identifiable categories include:
- too strong and prolonged frosts that extremely negatively affect the appearance of the crown of not too frost-resistant varieties in the absence of high-quality insulation;
- severe drought in the autumn period in the absence of high-quality freezing measures and drying of the root system;
- sunburns, strongly burning the youngest and most recently planted plants, in the absence of shading;
- too late and plentiful application of chemical fertilizers that cause burns to the root system.
Among other things, a decorative culture can be affected by some diseases and plant parasites, including late blight, brown shoots, rust and shute, thuja false scabbard, thuja moth spotted, wireworm, thuje oil beetle and spider mite.
For what reason the thuja turns yellow in the fall
Natural browning of the coniferous crown is often observed at the end of the growing season with the onset of late autumn. In this way, the plant adapts to the upcoming low-temperature regimes. However, sometimes pronounced yellowing is the result of significant errors in care and violations of growing technology.
therefore It is strictly forbidden to carry out late autumn watering and transplantingas well as planting seedlings in sunny areas without the use of a shading shelter. Significant yellowing of the needles can also be caused by excessive late application of fertilizers and an insufficient amount of oxygen entering the root system of the ornamental culture.
If the yellowing of the needles is caused by fungal infections, it is advisable to carry out preventive treatment of the crown with zircon or any copper-containing preparations, including HOM and Bordeaux liquid. A strait of trunks of circles with a solution based on foundationazole, as well as spraying of the crown with the Tornado Antiklesh drug, are very effective. Also in the fall, quite often, experts recommend the use of the Decis drug.
Why does thuja turn yellow
Why does thuja bark crack in autumn
Ruptures in the bark occur during the active growth of cambium, which is located between the bark of the coniferous and the wood. Through cracks formed on the bark, a viral and fungal infection enters the wood, which can quickly cause the death of an ornamental culture.
To restore the plant’s health, it is necessary to completely stop the introduction of complex fertilizers and growth accelerators, as well as be sure to add monopotassium phosphate, or a mixture based on 15 g of potassium sulfate and 40 g of superphosphate, into the trunk circles, which will stop the rapid growth processes. It is recommended to treat cracks in the cortex with a solution consisting of 15 ml of Fufanon and 50 g of Abiga-Peak, diluted in a bucket of warm water. At the final stage of processing, cracks are cleaned and covered with garden varnish.