1、 Increase illumination

If the sun is not enough, the growth of coppergrass may be caused by insufficient sunlight in winter

Solution: keep the Pennisetum in a place with good light, which can be placed in the living room with bright light or on the balcony. After full contact with the sun, the color of the leaves will gradually turn green

2、 Reasonable water change

Reason: Although the temperature in winter is low and the possibility of breeding bacteria is small, if the water is not changed for a long time, the water quality will be turbid, affecting the roots and causing the leaves to turn yellow

Solution: observe the water quality and change the water every half a month. The changed water should be dried in advance and the water temperature should not be too low

3、 Adjust temperature

Reason: if the temperature in the maintenance environment is low and lower than 5 ℃ for a long time, the plant will be frostbitten and yellow leaves will appear

Solution: it needs to be moved indoors in time in winter, and the temperature should be kept above 10 degrees Celsius, but it can't face the heating equipment, otherwise it will also cause yellow leaves

4、 Correct fertilization

Reason: if you don't pay attention to growth in winter, long-term lack of fertilizer or too much fertilization will cause the leaves to turn yellow

Solution: cut off the yellow leaves, and then apply fertilizer according to the growth trend. If you apply too much fertilizer, pour it out and change the water again