The growth and yield potential of tomato and chilli crop is highly influenced by the presence of weeds. In this study, the habitual weeds under tomato and chilli cultivation were identified and physiological parameters of crops and weeds influencing the development of inter and intra row weeder viz., height, canopy area, diameter, and root length were determined. In chilli crop broad-leaved weeds occupied a maximum area of about 54%, which is followed by grasses (29%) and sedges (17%). The same weed proportion was observed in tomato crop. In chilli crop, the maximum height, canopy area, diameter, and root length of the broad-leaved weed was found as 8.3 cm, 23 cm, 0.56 cm and 8.7 cm after 45 DAT. In tomato crop, the maximum height, canopy area, diameter, and root length of the broad-leaved weed were found as 9.1 cm 26 cm2, 0.6 cm and 10.2 cm after 45 DAT. Similarly, the physiological parameters of grasses and sedges in chilli and tomato crop were studied. The dry matter content, moisture content and weed population were determined for weeds in both chilli and tomato crop at 15, 30 and 45 DAT. The dry matter of weeds in tomato cultivated fields was found to increase from 21.54 g. m-2 to 26.08 g. m-2 at 15 to 45 DAT. The dry matter content of weeds in chilli cultivated fields was found to increase from 17.8 to 23.46 g. m-2 at 15 to 45 DAT. Similarly, maximum weed population was found as 63 % for tomato crop and 61% for chilli crops at 45 DAT. The moisture content shows a decreasing pattern from 15 to 45 DAT.