Using foliar spray of different concentrations of salicylic acid, we analyzed the pigments composition and the contents of anthocyanin and chlorophyll in three different leaf color (red, yellow or green) types of Zelkova schneideriana. The results showed that in red leaf type of Z. schneideriana, 0.5 mmol•L -1 SA could promote the anthocyanin synthesis, accelerate the degradation of chlorophyll, and enhance red degree of leaves. And in yellow leaf type of Z. schneideriana, 0.5 mmol•L -1 SA prolonged the green period and delayed leaf color cha...