1、 Cause

1. Soil problems: if there are germs in the soil where the green rose is cultivated, coupled with the humid environment, the germs will continue to breed, which will erode the root system of the green rose and cause rotten roots

2. Too much water: if you water it too much, there will be more water in the soil. The roots of green pineapple are soaked in water. They can't breathe normally due to lack of oxygen. Over time, the roots will rot

3. Poor water quality: there are bacteria and dirt in the water of hydroponic method, and the plants have been growing in a bad environment. Its roots cannot absorb nutrients in the water and will rot after a period of time

2、 Treatment method

1. Soil culture rotten roots: the best treatment is to take out the plants, clean up the old soil at the roots, and cut off the rotten roots with a sterilized blade. Replace with new cultivation soil, do a good job in high-temperature sterilization before use, and grasp the amount of water during maintenance

2. Hydroponic rotten roots: pour out the dirty water in the bottle as soon as possible, take out the plant and cut off the rotten roots. Disinfect with carbendazim or potassium permanganate and re cultivate with clean water quality. Usually we should change the water for it frequently, and there should be no impurities in the water