Hello. It is well known that the slight wilting inside the crown and at the base of the crown is a normal phenomenon in conifers, which occurs with age, i.e. with the growth and thickening of the crown and, therefore, the limitation of light penetration inside the crown. If you have not identified any other symptoms, it is most likely that the deterioration is the result of a combination of biotic and abiotic factors, including insufficient light on certain parts of the crown, poor soil properties and lack of essential nutrients, inadequate soil humidity at certain times of the year, etc.
For the time being, it is recommended to remove all the dry parts of the plant (as far as possible). It is recommended to use sharp and disinfected tools (e.g. ). Afterwards, you can consider gently loosening the topsoil around the conifers, followed by the application of a fertilizer such as , by watering the roots, according to the instructions in the product description. It has the effect of improving the quality of the soil, stimulating root expansion and supporting a vigorous growth. Also, during the growing season, you can regularly apply a fertilizer that is specially formulated for the nutritional requirements of conifers, such as , by spraying. This fertilizer supports the conifers’ resistance to stress factors, increases foliage density and helps prevent deficiencies and the browning of foliage.
During the growing season it is recommended to ensure optimal growing conditions (Thuja, planting guide and care work) and to monitor the development of the plants. If you notice any other symptoms of deterioration (pests, holes, deposits, outgrowths, very fine webs or others), please come back with clear photos and detailed information.