Black pine is cold-resistant and drought-resistant. It can be used on slopes and balconies in the yard, on platforms and in places with sufficient light and ventilation all year round. But small bonsai should not be exposed to strong light in midsummer. You can spend the winter in the open air in winter, and it is best to bury the basin in the lee of the sun. If you spend the winter indoors, the room temperature should not be too high.
Black pine prefers to dry rather than accumulate water, so it is not suitable for over-watering. Only when it is dry can it be watered thoroughly. Proper water control during the growth period can make the branches short and the needles short, and increase the ornamental value. When it is hot in summer, you can often spray foliar water, which is beneficial to growth.
Extended data:
Black pine is barren-tolerant, the soil is deficient in fertilizer, it can also grow normally, and it can promote dry dwarf, dense branches and short leaves. However, proper application of 1~2 times of thin decomposed cake fertilizer during the growth period is beneficial to healthy growth and increase the ability to resist pests and diseases.
In order to maintain its elegant and simple tree shape, the black pine bonsai should be trimmed properly, and the pruning should mainly be based on picking buds during the growing period, with an average of 3~4 times a year. When the new shoots are elongated but the needles have not been drawn, about 65,438+0/2 of each terminal bud can be picked. If the bonsai does not need long branches, all terminal buds can be picked.
Black pine bonsai is generally turned once every 3-5 years, preferably in February-March. When turning the pot, all the original pot soil should be poured out, and 1/2 old soil should be removed, too long roots, dead roots and rotten roots should be cut off, and some unnecessary branches and leaves should be trimmed at the same time to keep the pot soil balanced up and down.