 This study investigates the spatiotemporal variations in urban vegetation phenology using local climate zones, LCZs, in the Austin metropolitan area, Texas, USA. The results show that during the study period, the end of growing season, EOS, and start of growing season, SOS, gradually advanced, while the length of the growing season, LOS, showed no obvious change. Statistical analysis revealed significant phenological differences among different LCZs and along urban rural gradients, URGs. Geographically, SOS showed a fluctuating change with an advancing tendency, whereas the EOS decreased very slowly with distance from the city centre. LCZs can help identify distinctive phenology metrics with statistically significant differences, especially in EOS and LOS, and offer a unique analytical framework for studying urban ecosystem patterns, functions, and dynamics. This article was authored by Chun Hongjiao, Qihao Wing, Yi Chuan and others. We are article.tv, links in the description below.