1. Temperature: The normal growth of Buddleja officinalis needs to maintain a proper temperature. Its cold resistance and heat resistance are not strong, and the temperature needs to be kept between 18-26 degrees. The high temperature shall not exceed 35 degrees and the low temperature shall not be lower than 5 degrees. 2. Watering: Watering according to seasonal changes. Water needs to be watered every three days or so in spring and increased in summer. If the temperature is too high, you can water it once a day. Of course, you don't need to water it often in winter, because plants start to sleep at this time, so watering it once every two weeks is enough. 3. Lighting: You need to receive warm and sufficient lighting. For example, you need to get enough sunshine in spring and autumn. However, in summer, you need to minimize the glare to avoid the newly opened flowers drying and withering. 4. Fertilization: Before planting, you need to apply some base fertilizer. However, before flowering, you need to apply some fertilizer. You can apply some fertilizer cakes or organic fertilizer. Water is needed after fertilization.

Second, the breeding skills

1. Breeding: mainly sowing, preferably in spring. It is necessary to keep the soil moist after sowing, or cover it with some grass to prevent water evaporation and loss. 2. Pruning: Adult Buddleja needs proper pruning, cutting off some overgrown lateral branches and pruning some diseased branches to ensure its normal growth.

Third, the problem diagnosis and treatment

1. Diseases: Buddleja officinalis has relatively few diseases. As long as watering and ventilation are well controlled, there will be no diseases. 2. Insect pests: There may be red spiders, which can be controlled by trichlorfon solution. When larvae first appear, they can be removed manually.

Iv. other issues

1. Toxicity: It has certain toxicity. Try not to get it from children to avoid eating it by mistake. 2. Can it be raised at home? No, because its plant type is relatively high, and it cannot meet its normal growth conditions at home.