Among them Thevetia peruviana and Rosa cinensis showed lowest APTI values and can be used as 'Bioindicator'. Plant species like Mangifera, Azadirachta, Ficus, P sidum, Eucalyptus, Alstoni and Delonix were in the intermediate to tolerant zone of the index. Based on the investigation a green belt development plan for the polluted zoned of the city has been suggested.