Usually, begonia needs cutting to raise seedlings. Cutting time can be carried out except in severe winter, and May is the best. Cutting should take the top of healthy shoots with 2 or 3 buds, cut to 0.5 cm below the node, and remove the lower leaves. If the upper leaves are too big, you can cut off 1/2. Then, the cutting depth is 65438+ 0/3 of the cutting length. Pay attention to the shade and humidity after cutting. At the temperature of 22℃, it can take root in 3 weeks, and can be potted after 1 month. You can also insert the selected branches into water, soak them in water, change the fresh water every 1 ~ 2 days, and transplant after rooting. It takes about four to five months from cutting to flowering.

Daily management requires care.

Begonia japonica has strong adaptability and can grow in neutral and slightly acidic soil, especially in loose and fertile slightly acidic sandy soil rich in humus. Begonia japonica is afraid of cold and heat, and the optimum growth temperature is 18℃-2 1℃. Summer management is particularly important: 1, avoiding strong light. At high temperature, if the light is too strong, it is easy to cause the leaves to be dry and sharp, turn yellow or even fall off. Therefore, it is best to put it under the ventilated scaffolding or corridor in the yard in summer to receive more scattered light. 2. Avoid light. Begonia likes scattering light, but it is afraid of the dark. If it is placed in a dark place in summer, it will not only reduce the number of leaves and flowers, but also cause plants to grow in vain. If it is placed in too dark place for a long time, it will also cause yellow leaves to fall off and even plant death. 3, avoid being dry and afraid of being wet. During the peak growth period in summer, keep the soil moist but not too wet to avoid water accumulation in the basin. If the weather is too dry and hot, in addition to watering the pot soil, you should also spray water on the leaves and ground around the flowerpot 2 ~ 3 times a day, which is beneficial to its growth and flowering. 4. Appropriate fertilization. In the growing season, it is necessary to apply 1 times of organic fertilizer solution in about half a month; During pregnancy, more phosphorus and potassium fertilizers should be applied to promote flowers to flourish, and less or no fertilization should be applied during flowering. 5. In addition, attention should also be paid to pest control, pruning and shaping, so as to promote more new branches, more pregnant buds and more flowers, and maintain its beautiful plant type.

In the process of cultivating begonia, it will be found that the leaf edge of begonia is scorched and falls off. The main causes of leaf edge scorching and defoliation of Japanese begonia are:

Low temperature or hot summer. Begonia likes warmth, and the most suitable temperature for growth is 18℃-2 1℃. Although it is a relatively cold-resistant begonia variety, its leaves are easy to crack and fall off under 5℃. Begonia is afraid of hot summer, the temperature is above 30℃, the plant grows slowly, and it is in a semi-dormant state. If it is not properly maintained, it is easy to produce leaves.

Strong light or cloudy day. Begonia likes enough scattered light. In summer, when the temperature is high, the light is too strong, which is easy to cause the focal tip and edge of leaves, and the leaves turn yellow or even fall off. If there is insufficient light, the number of leaves and flowers will decrease, and plants will grow in vain. If the light is too weak, the leaves will fall.

Drought or excessive humidity. Begonia naturally grows in forests or valleys with high humidity, and its stems and leaves are tender and juicy. Therefore, in addition to providing a humid ecological environment, we should also supply enough water during the growing period, but we should avoid being too humid. Excessive drought and humidity will affect the absorption of plant roots and cause defoliation, especially when the temperature is low in winter, otherwise it will easily lead to root rot and defoliation.

I believe that under the guidance of scientific methods, everyone can grow beautiful flowers.