In the urban green spaces (UGSs) of Chandigarh city, India, a floral variety inventory was prepared. This inventory attempts to investigate the variety and wealth of trees in planned city of Chandigarh. In order to study urban floral diversity, four categories were used;academic plantations, public parks, botanical gardens and avenue trees that line the sides of roads. Avenue trees with girths at breast height (gbh) less than 10 cm were recorded. In total, 319 species were identified belonging to 90 different families. The results show that the green spaces of the city were dominated by the trees of Fabaceae family, followed by the Apocynaceae. All types of green spaces exhibit a preponderance of trees based on habit distribution, followed by shrubs. Avenue trees were mostly non-native and predominately of the deciduous variety. The findings highlight the significance of Chandigarh's enormous floral diversity in urban green space in the face of urbanisation. The UGSs provide the vital ecosystem services in the cities which is a necessity for sustainable development.