1, the first case is old leaves and new leaves. If the leaves turn yellow at the same time, the main reason is long-term lack of light. Solution: increase the light appropriately.

2. The second situation is the yellowing of old leaves, which is mainly caused by long-term water shortage or water shortage. Solution: water it every time.

3. In the third case, if the new leaves turn yellow and the old leaves are normal, it means that the amount of watering is too large or there is a lack of fertilizer. Solution: control watering or topdressing.

Specific preventive measures

First cut off the yellow leaves and put them in the shade. When the water is almost dry, water them again. Don't rush to fertilize them. There may be two situations, one is that the air humidity is too small, that is, it is too dry; Another situation is the lack of trace mineral elements.

In fact, it is to control the temperature and humidity, bask in the sun in the morning and evening, and fertilize properly.

The leaves of Anthurium andraeanum appear yellow, dry and rotten, which may be caused by bacteria. To remove bacteria, 0.3% garlic juice solution, 0.2% vinegar solution or 800- 1000 times carbendazim and chlorothalonil solution can be sprayed for control.

The indoor maintenance of Anthurium andraeanum should be managed in a semi-cloudy, humid and warm environment, and the temperature should be between 20-25℃ and not higher than 33℃, otherwise discomfort symptoms will easily occur. The air humidity must be between 75% and 90%, and the leaves below 50% are easy to scorch.