Winter tube of rhododendron bonsai
Rhododendron bonsai is favored by people because of its excellent appearance, shape and color. Winter maintenance should pay attention to the following aspects.
First, temperature regulation: different kinds of cuckoos have different requirements for temperature, so they should be treated differently. Spring cuckoo, summer cuckoo and rhododendron are relatively cold-resistant, and they will not suffer frost damage as long as the room temperature is not less than 0 ℃, while the western cuckoo should ensure that the room temperature is more than 2 ℃ before it can safely survive the winter, and if the room temperature can not reach it, it needs to be heated, such as lighting, fire and other cold protection measures, otherwise the plant leaves will freeze charred or even freeze to death. The best temperature for rhododendron bonsai overwintering is 8: 10 ℃.
Second, master humidity: cuckoo bonsai is in a semi-dormant state in winter, and the water absorption and leaf evaporation are weakened accordingly, so excessive watering and wet basin soil can easily lead to root rot. Therefore, every 5-7 days, it should be watered thoroughly with indoor water (snow, Rain Water is the best) at noon, and bonsai should be placed in a sunny place.
Third, moderate fertilization: although cuckoos do not need fertilization in winter, a base fertilizer is indispensable since January. Base fertilizer with withered cake or bean cake powder mixed with a small amount of bone powder, dry application slightly away from the pile root. The hole application method is usually used, and the amount of fertilizer application depends on the size of the tree stump, and the soil flat hole is covered after application. The base fertilizer can gradually absorb the trees, which is beneficial to the strong branches and luxuriant leaves and beautiful flowers in the second year.
Fourth, shaping and pruning: rhododendron bonsai shaping should be appropriately bound with wire or brown wire according to the original tree-shaped situation. Do not excessive banding, one is to prevent falling buds (spring cuckoo), the other is to avoid breaking and withering branches and destroying the overall balance of the tree. Winter pruning is mainly to prune or cut too close branches, only long branches, sick and weak branches and other branches that are not helpful to shape. In addition, the spring cuckoo has formed buds in winter, properly remove too many too dense and thin and weak buds, promote the concentration of plant nutrients, but also prolong the flowering period.
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Rhododendron bonsai pot changing method
The general routine method is to pour out the soil balls of the plant, remove part of the original soil, trim and arrange the roots, re-fill the new soil, and water it. If you change the soil in this way, if you are not careful in management, the plant will die. The longer the maintenance time, the higher the mortality. The reason is that the old soil mass left at the base of the trunk is not only hardened, but also dry, and the supply and demand of the plant is out of balance. When the basin is re-watered, it is difficult for the water to seep into the soil mass. Even if a lot of water is poured, the water seeps out from the new soil layer, and the root mass is still dry in the middle.
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Five taboos for summer potted plants
1. Avoid fertilization. High temperature in midsummer, leaf water loss faster, fertilization at this time will make the pile cell solution concentration is less than the external environment concentration, resulting in plant cell moisture reverse soil flow, pile body due to fertilizer damage water loss and death. Second, avoid drought. Think of watering, do not think of watering, sometimes a few days in a row regardless of, once the leaves wilted, only rapid hydration, leaf surface will return to normal, this is a reaction of the pile body to adapt to the environment, but long-term so, too strong transpiration will eventually make the pile body serious illness difficult to recover dehydration and death. Third, avoid water
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