1, light requirements. Sequoia is shade-loving drought-resistant plants, should be placed indoors, the summer should be properly shaded, can not be placed in the room with western light, do not place in the air conditioning vents or next to the heater, that will make the amount of water evaporation of the foliage of the Sequoia, leading to dehydration of the branches and leaves, and finally the leaves curled, dry. Every year in July-August under strong light irradiation, so that the leaf chlorophyll is damaged, need to pay attention to avoid. The light time is as short as possible in summer, and can be longer in fall and spring. But no light will also affect the growth of the redbud.
2, pot selection. Appropriate slightly larger pots, the lower part of the pot with a few more holes to enhance the water seepage and air permeability of the pot.
3, soil selection. It is appropriate to use loose, rich in humus, fertile, water retention, fertilizer, air permeability of the soil, the soil is slightly acidic (PH value of 5-6.5), the best loam. Clay soil is not breathable, sandy soil is poor in fertilizer and water retention, and should not be used. In addition, it can also be used to form a mixed cultivation substrate with loamy soil such as charcoal soil and perlite.
4, moisture requirements. The surface of the potting soil appears a little yellowish-white, the leaves are slightly rolled, no need to water, only need to carry out the page spray can be. When the soil is white, watering should be carried out. Watering should be a one-time watering, so that the potting soil fully absorb sufficient water. Water once in 15-20 days for outdoor placement and once in 20-25 days for indoor. Keep the soil moisture content around 40%. Note that too much and too hard watering will cause root rot of the redbud. In summer, when there is a lot of rain, if you put it outdoors, you should drain out the excess rainwater in time to prevent the redbud from being soaked in water for a long time. Of course, long-term drought and lack of water is not conducive to the growth of the sequoia.
5, soil fertility. Each plant with organic fertilizer 0.2 pounds and compound fertilizer 0.02 pounds, can also increase the application of farmyard manure, cake fertilizer (such as cottonseed cake, peanut cake, hemp cake), should try to fertilize along the walls of the pots, can not be close to the root of the red bean tree. Generally newly purchased cedar bonsai with nutrient soil, 3 months without fertilizer, after 2-3 months Shi once.
6, transplantation and potting. About a year later, the red bean tree sapling gradually grows, the root system is developed, at this time you need to transplant the pot. Break the old pot, while not damaging the original soil ball, move it into the new pot, and watering the roots to ensure that the root system and the soil closely combined to ensure survival. If conditions are favorable, the red bean tree seedlings can be transplanted to a large field, the growth rate will be faster.
7, bonsai grooming. Bonsai lower branches grow too dense, there will be dry yellow leaves off, can be lower too dense branches pruned off part. The pruning process can be arbitrary modeling, can become umbrella type, tower type, round type, etc.. Newly purchased yew three or more bonsai, transplanted from the planting base to the pot will make part of the root system will be injured, so that the root and branch and leaf nutrient supply imbalance, in the case of potting soil to keep wet, the leaves are still appearing curled and dry; can be pruned to reduce the consumption of nutrients on the branches and leaves, to restore the growth of the root system. In order to keep the red bean tree crown beautiful, you can moderately remove the top bud and some side buds.
8, pest control. A few young redbud trees in the high temperature or dry season, will occur leaf blight and red blight, available 1% Bordeaux solution for control.