栀子花喜温暖、湿润、通风良好的环境和酸性壤土,其中有一方面不适则易发生黄化现象。北方栽培的栀子花,长期受微碱性或碱性水、土的影响,常出现新生叶黄化失绿而后全株枯死的现象。经扣盆观察,根系多数生长不良,须根少,甚至腐烂或根冠枯死。笔者在多年栽培中发现,冬季停止生长后,春季和雨季黄化发生率高,扦插苗则生根成活后不久即黄化。总之,在土壤pH值大于7～ Gardenia hi like warm, moist, well-ventilated environment and acidic loam, which is not easy to occur on the one hand the phenomenon of yellowing. Gardenia flowers cultivated in the north, long-term by the alkaline or alkaline water, soil, often new leaves yellowing green and then the whole plant dead phenomenon. Observed by the buckle basin, the majority of poor root growth, fibrous roots less, and even decay or dead crown. I found in many years of cultivation, stop the growth in winter, the high incidence of yellowing in spring and rainy season, cutting seedlings rooted soon after living yellow. In short, in the soil pH value is greater than 7 ~