Generally, after a period of growth, new leaves will gradually grow, and old leaves will be metabolized. It is normal for the old leaves to turn yellow gradually, and there is no need to worry that it will affect the normal growth of blizzard.
Too strong sunlight will burn the plants of snow element, especially after the summer rainstorm, snow element is strongly illuminated, which is easy to cause the leaves to turn yellow.
Improper watering will have a bad effect on the growth of snow element. Too much water, easy to rot roots, roots are not good, will affect the whole snow element, leaves will also grow bad, yellow.
Fertilization is also a technical activity. Fertilization should not be too much or too little, or lack of some elements. Lack of P and k elements is easy to make leaves yellow, old leaves gradually turn yellow and fall off, and the tip of leaves is dry when serious. But when fertilization is insufficient, the soil nutrition is insufficient, will cause the branches and leaves to be thin and yellow.
Generally, the yellow leaves caused by normal metabolism don't need to worry, just trim the yellow leaves to keep the appearance of snow element beautiful.
In the normal growth of Blizzard, we should pay attention to the control of watering and ventilation, to avoid diseases caused by excessive air humidity and yellow leaves.
Control the amount and times of fertilization, apply fertilizer sparingly, and supplement the missing elements in time. Due to the phenomenon of yellow leaves caused by improper fertilization, the soil can be removed from the pot, replaced with new culture soil, and the snow element can be replanted. The replanted snow element shall be watered once, and the seedlings shall be put in the shade to slow down after being watered. After it recovers to grow, thin liquid fertilizer or compound fertilizer is applied.