1. The diseases of flowers, such as anthracnose, black spot, brown spot, gray mold, blight, and epidemic diseases, are all overwintering in the soil with mycelia or sclerotia. 2. Nematode Caenorhabditis elegans is also the first winter in the soil, and then invade the roots and leaves of flowers. 3. When the flower is cut and propagated, it is required that the culture soil should be clean and sterile so as to prevent the bacteria from invading from the cutting wound and cause the cuttings to rot and affect the survival of cuttings. 4. Flower cultivation matrix soil disinfection, especially in spring is an important measure to prevent the occurrence of flower diseases, can kill pathogenic bacteria and parasites in the cultivation matrix. Anal Vibrator,Anal Sex Toy Vibrator,Waterproof Anal Vibrator,360 Rotation Anal Vibrator Shenzhen Dongchen Hey E-commerce Co.,Ltd. , https://www.xxsexytoy.com