Beauty appearance Astilbe based on lush green mat cushion and air panicles of flowers. The representatives of this species are unpretentious and successfully cultivated even beginner gardeners. However, in the autumn of Astilbe care it requires the implementation of certain specific activities that will prepare the bush for the winter and will help to transform the flower to attack next season.
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Autumn feeding
After flowering Astilbe continues vegetation: its aerial part remains green, photosynthesis continues, and all other vital processes. However, flowering plants takes away a huge amount of nutrient resources, the stock of which should be filled as quickly as possible. Deficiency of nutrients compounded by the longevity of Astilbe, not requiring transplantation for 5-20 years. Over such a long period of bushes pulled out of the root zone of the soil all available batteries.
In connection with this annual autumn Astilbe is an urgent need for replenishment of the supply of substrate.
Among the suitable dressings for the representatives of this species are distinguished:
- fertilizers containing potassium and phosphorus: Potassium-magnesium mixture and superphosphate can be made loose granules (20-25 g) in a half-meter radius from each plant;
- nutritional compositions based on organic: wood ash (100 g / m² 1), bone meal (2 tablespoons / 1 m) and rotted compost / humus (10 l / m² 1).
Contributed minerals help protect the roots from frost and provide a supply of inorganic nutrients necessary for the growth and development of foliage in the spring.
pruning
Be sure to expose the cutting faded inflorescences, as if left on the bush, they will form the basis for the formation of many seeds, a process which pulls the entire supply of nutrients from the bush substances. At the end of flowering Astilbe should prepare for the winter cold and to direct available resources to strengthen the roots.
Trim slowly dying yellowing leaves on the healthy bushes are contraindicated. Up to the frost photosynthetic Astilbe plate function and interact with the bodies of the suction system. Conditions of temperature below 0 ° C and quenched inhibit sap circulation of stems and leaves. However, even the dead leaves is better not to remove, because they can form a natural antifreeze protect flowerbeds and as a result of decomposition of soil minerals return spent on them formation.
The prohibition on the leaf does not apply to pruning Astilbe, which plate struck pests and pathogenic microbes.
The system of measures to prepare for the winter sick Astilbe includes the following procedures:
- holding during the period of moderately warm autumn weather processing plants with insecticides and drugs in order to avoid problems;
- leaves after cutting them podmorozki retaining plates stumps, rising above the surface of the soil is 10-15 cm;
- Autumn medical treatment.
Left hemp winter snegozaderzhivayuschuyu will perform the role of protecting the root system from severe frosts.
Mulching
Astilba has a sufficiently high resistance to frost. The plant successfully withstand winter Average strip without an additional protective layer. However, severe and snowless cold period could be potentially dangerous for the bush. Therefore, to reduce the existing level of risk is necessary to organize the protection of the branches of Astilbe lapnika and sketched them snow.
In a further especially need shelter fragile young bushes 1-2 years of age and older Astilbe, the first order whose roots are often on the surface of the soil-ground, and therefore susceptible to of freezing. Total protection wintering plants can be achieved by mulching circle around-trunk layer humus, compost or peat. This mulch will be a source of additional organic food.
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