Bonsai Culture of Taxus mairei

Taxus is suitable to be planted in the north and south of China, with the characteristics of shade, drought and cold resistance, requiring soil PH value of 5.5-7.0. Taxus is an ancient tree species with a history of a hundred years. It has a long history of cultivation in China and is deeply loved by people. Today, the editor shares the bonsai culture methods and conservation precautions of Taxus chinensis.

Bonsai Culture of Taxus mairei

For the problem of how to raise yew bonsai, we should start with the whole management details such as light, moisture, fertilization, pest control and so on.

1. Lighting requirements

Taxus is a plant that likes shade and drought tolerance, should be placed indoors, shaded properly in summer, cannot be placed in the room with western sunshine, and should not be placed in the air outlet of the air conditioner or next to the heating, which will make the leaves of the yew evaporate, cause the branches and leaves to dehydrate, and finally the leaves curl and dry up. The chlorophyll of leaves is destroyed under the strong light from July to August every year, which needs to be avoided. The sunshine time in summer is as short as possible, while autumn and spring can be longer. But the lack of light will also affect the growth of yew.

2. Flowerpot selection

Appropriate slightly larger flowerpot, the lower part of the pot more than a few holes, in order to enhance the water permeability and air permeability of the flowerpot.

3. Soil selection

It is appropriate to use loose, humus-rich, fertile, water, fertilizer and breathable soil, the soil is slightly acidic (PH = 5-6.5), and loam is the best. Clay is impermeable, sand keeps fertilizer and water retention is poor, so it is not suitable to be used. In addition, peat soil, perlite and loam can also be used to form a mixed cultivation medium.

4. Moisture requirement

There is a little yellow and white on the surface of the basin soil, and the leaves are slightly curled, so there is no need to water them, just spray the page. When the soil turns white, it should be watered. Watering should be thoroughly watered at once, so that the basin soil can fully absorb enough water. Water every 15-20 days outdoors and once every 20-25 days indoors. The soil moisture content is maintained at about 40%.

Note that too much watering and too often watering will cause yew roots to rot. When Rain Water is big in summer, if you put it outdoors, you should discharge the excess Rain Water in time to prevent the yew from soaking in the water for a long time. Of course, long-term drought and water shortage is not conducive to the growth of yew.

5. Soil fertility

The application of organic fertilizer 0.2 jin and compound fertilizer 0.02 jin per plant can also increase the application of farm fertilizer and cake fertilizer (such as cottonseed cake, peanut cake, sesame cake). Fertilizer should be applied along the basin wall as far as possible, not close to the root of Taxus mairei. In general, the newly bought yew bonsai has nutritious soil, which does not need to be fertilized within 3 months, and then applied once every 2-3 months.

6. Transplant and change the basin

About a year later, the yew seedlings gradually grow up and their roots are well developed, so they need to be transplanted to change pots. Break the old basin without damaging the original soil ball, move it into the new basin, and water the root to ensure the close combination of the root system and the soil and ensure survival. If there are conditions, yew seedlings can be transplanted to the field, the growth rate will be faster.

7. bonsai trimming

Bonsai lower branches grow too dense, there will be dry yellow leaves fall off, the lower too dense branches can be trimmed off part. In the process of pruning, it can be shaped arbitrarily, such as umbrella type, tower type, round type and so on.

When the newly purchased yew bonsai above yew No. 3 is transplanted from the planting base to the flowerpot, part of the root system will be damaged, thus the nutrient supply between the root and the branches and leaves will be out of balance, and the leaves will still curl and wither when the potted soil remains moist; the nutrient consumption of branches and leaves can be reduced by pruning to restore root growth. In order to keep the crown of Taxus mairei graceful, the terminal bud and some lateral buds can be removed moderately.

8. Pest control

Taxus stem rot is one of the most serious diseases in the growing period of Taxus cutting seedlings. After 2 months of cutting, stem rot occurred successively at the stem base of the cuttings (at the junction of underground and aboveground cuttings), which was caused by individual plants and then spread into a whole cluster, resulting in green loss, death and shedding of panicle leaves. Because the disease mainly occurs in the high temperature season in summer and autumn, the cutting seedlings are damaged by high soil temperature, which provides conditions for the invasion of pathogens. The occurrence and epidemic of the disease mainly depend on the air temperature in July and August. If the disease occurs early, the heat resistance of seedlings is weak, the disease is serious.

① reduces the soil surface temperature of the nursery bed in summer and autumn to prevent the base of the seedling stem from being burned, so as not to cause the wound to lead to the invasion of germs.

② applied more fertilizer to promote the growth of cuttings and enhance their disease resistance.

③ was irrigated with pentachloronitrobenzene powder + dimethazone powder mixed with water with 5g/kg concentration, and the best control effect was 89%, or with carbendazim + methyl thiophanate wettable powder mixed with water with 4g/kg concentration, the control effect reached 83%.

The occurrence of stem rot of cutting seedlings can be basically controlled by alternating application of the above two methods in large area control of ④.

Matters needing attention in the maintenance of yew bonsai

1. The yew likes the cultivation environment with loose and good drainage, so the purple sand basin is the best "partner" of the yew.

2. Taxus chinensis young trees prefer shade and are not suitable for strong light, so they are suitable for growth and development under the condition of indoor scattered light. If it is exposed to strong light in summer, it will cause some burns of twigs and tender leaves, withered and yellow branches and leaves, stagnation of growth, and death of the whole plant in serious cases. But also can not be placed in too dark, no light place, it is best to have the right amount of light every day, indoor near the window is more appropriate.

3. It should be placed in a place with good ventilation. Indoor closeness and poor ventilation will cause yew leaves to roll and fall. It should not be placed in the tuyere, otherwise the leaves of the plant will curl and dry up due to the increase of water evaporation.

4. Watering the yew should follow the principle of "no dry, no watering, watering thoroughly". Too much watering can easily cause root rot. Whether you need watering or not can be judged according to the wetness of the basin soil. The most direct judgment method is to insert a wooden stick into the soil 2 to 3 centimeters. When you feel the soil is dry and hard, you need to water it. You can also knock the basin by hand, and the dry and wet condition of the basin soil can be judged from the sound. When the basin makes an empty sound, the soil is dry, and the muffled sound indicates that the soil is still wet. Water until it flows out of the basin bottom drain. When watering, it should be noted that the yew likes the slightly acidic medium environment, and for the areas with alkaline water quality, ferrous sulfate can be added to the water. It should also be noted that the difference between water temperature and soil temperature is not too big. When it is hot in summer, it should be watered in the morning and evening, but not in the hot sun at noon; when it is cold in winter, watering should not be neglected, watering should be in a sunny noon.

5. Leaves are sprayed with water to keep moisture. The humidity of Taxus mairei in northern areas is often "substandard", so it is necessary to spray water on the leaves to increase the humidity. When spraying water, it should be noted that because the leaf surface of the yew has a layer of wax, it should be sprayed from the back of the leaf from the bottom to the top.

6. Foliar fertilizer (potassium dihydrogen phosphate) can be sprayed every other month or so.