Autumn works


With the arrival of the cool autumn it is good to quickly place the indoor bonsai in the apartment and the outdoor bonsai in a sheltered and fairly sunny area of ​​the garden or terrace. We reduce watering and avoid supplying fertilizers that are too rich in nitrogen, which favor the development of new branches, too delicate to withstand low winter temperatures; instead we prefer organic fertilizers or fertilizers rich in potassium and phosphorus, which favor the development of the root system and the lignification of plant tissues, making it more resistant to low temperatures.

Indoor bonsai

All bonsai that fear the cold are indoor bonsai, often because they are plants originating from tropical areas, where temperatures remain above 12-15 ° C all year round. We speak therefore of the ficus from the inside, of the serisse, of the carmone; all plants very suitable to be cultivated as bonsai, also thanks to the fact of having a small and often evergreen foliage.
With the arrival of cold these plants must be placed in the apartment, or in a tempered greenhouse if available; it is not recommended to leave these bonsai on the terrace, because they are very afraid of temperature changes, while they like constant climates, as can be the one present in the house. When placing a bonsai in an apartment remember to choose a bright place, but away from the direct rays of the sun, which could burn the foliage; let's keep them away even from windows or heat sources, which cause sudden changes in temperature.
Even the evergreen plants during the autumn and winter have a period of semi vegetative rest, during which they do not produce new vegetation and slow down the growth; for this reason they need less fertilization, but also less watering. The best method to water these bonsai is to immerse the pot in a container filled with water and withdraw it when the soil appears wet on the surface; in this way we will have moistened the whole earthen bread, without however causing water stagnation.
Given the dry climate present in the home, caused by the heating system, remember to vaporize the crown of our bonsai often, in order to increase the environmental humidity and prevent the leaves from being removed.

Outdoor bonsai

During the cold months the outdoor bonsai are in partial or total vegetative rest; let's remember therefore that the fertilizations and the waterings must be reduced, therefore we water the plants only every 7-10 days, or even less often during the coldest months of the year, remembering to practice watering only in the morning, possibly avoiding the periods of frost.
Even if outdoor bonsai do not fear the cold, small pots do not guarantee an always effective coverage for the root system; it is therefore advisable to place the vases in a sheltered and fairly sunny place; during the winter it may be necessary: ​​we can use leaves, straw or simply the tissue, trying to cover the vases completely.
We also take advantage of these weeks to clean up the soil from any weeds, also removing the surface of the growing substrate and renewing it.

Autumn works: Autumn works

Whether it is indoor or outdoor essences during the autumn months we can begin to practice grafts, to prepare new prebonsai; at the end of summer we can also take semi-woody cuttings, to be rooted in a mixture of peat and sand in equal parts, in a cool and damp place, away from direct sunlight; the small cuttings will be cultivated in a sheltered place throughout the autumn and winter.
The beginning of autumn can also be the best time to repot bonsai for a long time in the same substrate; then we extract the plant from the container, we clean the root system from the soil that covers it and we shorten the roots by about a third; then we place the plant in the previous container, or in a slightly larger or smaller one if necessary; we cover the roots with new bonsai soil, using a stick or a small spade to make sure not to leave any air pockets, which are very harmful for the development of the plant, as the water of the water will stop in them favoring the development of rots.
In general, at the end of summer, a treatment based on white oil is used to prevent the growth of cochineal on the foliage; we practice this treatment also and above all on indoor bonsai, which will spend the whole autumn and winter in a poorly ventilated and very dry place, or at home.