(1) Cultivating environment Black pine is cold-tolerant and drought-tolerant, and can be placed in the courtyard on the slopes and balconies, on the platform, where there is sufficient light and air flow. However, when the small bonsai is in the midsummer, it is not suitable for glare. Winter can be exposed to winter, it is best to bury the pot in the sunny leeward place. If you are wintering indoors, the room temperature should not be too high, and the Qingming Festival can be moved outdoors.
(2) Watering Black pine is dry and avoids stagnant water. Watering should not be excessive. See dry before pouring, pouring and pouring. Properly controlling water during the growing season can make the branches thick and short, and the needles are short, adding ornamental value. When the temperature is high in summer, the surface water can be sprayed frequently, which is favorable for growth.
(3) Fertilization Black pine is resistant to thinness, soil is deficient, and can grow normally, and promotes dry dwarf, dense branches, and short leaves. However, proper application of 1 to 2 times of thinly decomposed cake fertilizer water during the growing season is conducive to robust growth and increased ability to resist pests and diseases.
(4) Trimming the black pine bonsai to maintain its beautiful and quaint tree shape, it should be properly cut, trimmed in the growing season to pick the buds, 3 to 4 per year, when the sprouts are elongated but the needles have not yet been extracted, pickable Go to about 1/2 of each top bud. If you don't need to grow the bonsai of the branches, you can remove all the top buds. For branches that affect the appearance of the tree, it can be trimmed during the dormant period.
(5) Turning pots The black pine bonsai is usually turned over once every 3 to 5 years, and it is appropriate to carry out from February to March. When turning over the basin, keep the original potting soil intact, remove 1/2 of the old soil, cut off the long roots, and dry roots and rotten roots, and trim some unnecessary branches and leaves to maintain the balance of the upper and lower parts of the potting soil. If the original pot capacity is not enough, you can change it to a slightly larger new pot. The planting method is the same as the top pot.
(6) Pest Control The common diseases of black pine include koji disease and pine tumor disease. Control measures: pine needle rust and pine tumor disease can be sprayed with 65% wettable fermific iron or thiram 300 times solution; deciduous disease can be sprayed 0. 5 Baume's stone sulfur mixture. Common pests include aphids, scale insects, red spiders and pine mites. Red spider and pine tip mites can be sprayed with 50% sputum emulsifiable concentrate 1000-1500 times or with 40% lycopene emulsifiable concentrate 2000 times.
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