This reason may be caused by the change of growth environment, so it is necessary to give it a more comfortable environment for maintenance. It may also be caused by improper water, fertilizer and light, or by improper cultivation soil. If the temperature is too high or too low, the leaves and clamps will be blackened, and if the plants are fed too much, they will suffer from indigestion.
1. It is advisable to control the water content in the plant basin at about 50% to 70%, then cover it with a bag for stuffy curing, and then put it in a place with light for curing for about 7 days before taking it out for curing..
2. Control its temperature between 15 ℃ and 25 ℃. You can water it by sitting in a basin, so that the flytrap will not cause water logging.
3. The loam used can be peat, river sand and other materials with good moisture retention, which can be used after being stirred evenly.
4. Eat less food for the plant, so as not to cause indigestion of its clamp, so that the color turns black. The use of fertilizer should not be too large, can be mixed with water and then irrigated.
