Too much water: too much water for osmanthus may cause it to appear yellow leaves. At this time, first take off the basin and repair the root, then put it in the ventilated place to dry, and then plant it into the new soil without water. Too much light: a long period of strong light may also cause yellow leaves. At this time, first cut off the yellow leaf, and then put it in the ventilation place for maintenance. Diseased insects: the occurrence of diseases and insect pests may also cause it to appear yellow leaves. At this time, spray the corresponding agent for treatment.
