What is the reason for the dry leaf tip of flowers

The dry leaf tip of flowers is caused by excessive fertilization, too strong light and so on. Caused by too much fertilization, the new leaves will appear dry brown at the top, and the old leaves will appear dry, withered and yellow, so it is necessary to stop fertilization and rinse the soil with clean water; caused by too strong light, flowers need to be transplanted and cultured in a cool place.