1、 Cut off the blade

Black spots on the leaves of green pineapple are generally sick. In this case, the diseased leaves must be cut off first. It should be noted that there is slight toxin on the leaves of green pineapple, so don't pick it with your bare hands. It is recommended to wear gloves or cut it off with scissors

2、 Spraying pesticide

Most of the diseases of green pineapple in winter are anthrax. Therefore, it is necessary to spray drugs for prevention and control to avoid black spots on other leaves. Generally, 20% imazazole water solvent is mixed with 800 times water, and sprayed on the leaves with a watering can

3、 Strengthen ventilation

Most of the reasons why lvluo gets sick in winter are due to poor ventilation. However, due to the cold winter and poor cold tolerance of the plant, it is also harmful to open windows for a long time. Generally, the plant is placed in the sunny place at noon on a sunny day, and the window is opened for ventilation

4、 Reduce watering

The residue of water may lead to the breeding of bacteria, which may lead to various diseases. Therefore, to keep the soil in a slightly dry state, single watering should not be too much. You can wait until it is dry. In addition, the water temperature should also be strictly controlled. If the tap water temperature is low, it needs to be put for a period of time to avoid frostbite to the root