1. Winter management method: Photinia rubra is a common temperate plant with poor co
1. Winter management method: Photinia rubra is a common temperate plant with poor cold resistance. After winter, the branches can be coated with lime, or the surface of bonsai soil can be covered with a thin layer of soil to keep warm and insulate. If it is lower than 5℃, it is necessary to move into a room with radiator machinery to prevent the main pole from freezing.
2. Pest control: The key to common diseases of Photinia rubra is brown spot and gray mold, which are mainly caused by the erosion of leaves and stems. After a long time, the leaves will turn yellow until the main stem withers. It is best to improve indoor ventilation frequently and control water quantity properly during maintenance. In the early stage, triadimefon or thiophanate-methyl should be used for spray control.
3. Effective fertilization: However, if too much fertilization is applied, it will cause serious damage to its leaves, turn yellow and dull, and eventually lead to shedding. Therefore, we must pay attention to it in the case of breeding.