The study was carried out at Kallamalai hills, Rasipuram Taluk, Namakkal district, Tamil Nadu, India. The vegetation analysis was enlisted 464 species and 251 genera of angiosperms belong to 75 families. During Post monsoon period Jan-Feb 24 species (5.19%) were in flowering and133 species (28.79%) were in fruiting. In Pre monsoon period March-May 37 species (8.01%) were in flowering and 54 species (11.69%) were in fruiting. In south west monsoon period June-Sep 75 species (16.23%) were in flowering and 27 species (5.84%) were in fruiting. In North West monsoon period Oct-Dec 187 species (40.48%) were in flowering and 58 species (12.55%) were in fruiting. Flowering phenology largely take place during North West monsoon and fruiting phenology largely take place during Pre monsoon as evidenced by the study.
