栀子花掉花苞怎么办？茶花掉花苞怎么办？/Gardenia bud off how to do? Camellia bud off how to do?

今日提问：米兰、栀子花、龙血树、昙花、茶花/Today's question: Milan, Gardenia, Dragon's blood tree, Epiphyllum, Camellia