1. Temperature: it is neither cold nor high temperature resistant. The temperature suitable for its growth is about 20 degrees. If the temperature in summer exceeds 25 degrees, it needs to be cooled. If the temperature in winter is lower than 5 degrees, it needs to be kept warm.
2. Watering: spring and autumn are the exuberant periods of its growth. It needs to be watered every three days. In summer, the temperature is high, and the water evaporates faster, so every watering is needed. If the water is tap water, it needs to be dried before use. In winter, we need to control the amount of water, once a week.
3. Fertilization: in the growth period, fertilizer should be applied once a half month, and the fertilizer should use NPK compound fertilizer, because the nutrition of compound fertilizer is comprehensive, which can meet the needs of plants in all aspects. Stop fertilization in dormancy period to avoid fertilizer damage.
4. Light: it can't receive strong light. When it is under strong light, its branches and leaves will soon dehydrate, and the leaves will become tarnished. During the growth period, it can meet the requirements of six hours of light radiation every day, and four hours of light in the dormancy period.
1. Propagation: generally, sowing method is used for propagation of Stevia rebaudiana. The collected seeds are sprinkled into the soil with sufficient nutrients and moist soil, and then covered with a thin layer of soil to keep the moisture of the soil at 50%. They are maintained in a warm and dark environment, and they will emerge in a week or so. After they emerge, they cannot be transplanted temporarily. They should be transplanted when they grow three real leaves, so as to achieve this goal. The activity rate will be higher
2. Pruning: when it is in the period of vigorous growth, the branches on the top of the plant can be removed. The purpose is to concentrate nutrients and promote the growth of lateral buds. If there are buds on the top of the plant, they can also be removed at the same time, so as to prevent the plant from growing in vain.
1. Insect pest: it is easy to infect Paulownia beetle. When the insect is still in the larva stage, it needs to spray some chemicals, once or twice a week.
2. Pathological changes: catalpa trees are easy to be infected with gangrene when the climate is wet, and their leaves will fall off when they are sick. Therefore, it is necessary to strengthen ventilation during the maintenance process. If the plant is infected with anthrax, it can be sprayed with carbendazim.
1. Toxicity: it is non-toxic. It can be used not only without toxic bark, but also leaves have the effect of detoxification.
2. Whether it is suitable for indoor culture: if the potted plants are treated, they can be cultured indoors. If it is not treated, indoor culture is not recommended, because its growth speed is too fast, and the plant is too large, which does not meet the conditions of family planting.
