We recorded weekly incidence of Tetranychus urticae on African marigold plant throughout the year from third week of March, 2018 to first week of March, 2019. A highly significant positive correlation of mite population with minimum temperature (r=0.90) and average wind speed (r=0.76) was observed. Regarding leaf stage, grown up leaves on ventral surface were more susceptible to mite infestation. The analysis showed that in summer season plants harbour more mites per leaf as compared to rainy and winter. Assessment of yield loss is fundamental to T. urticae management as they are the means by which this mite is adjudged as a pest. Highly significant negative correlation was found between number of mites and fruit parameters like no. of flower (r= -0.953), flower diameter (r=-0.933), flower weight (r=-0.816), and yield per plant (r= -0.923). Statistically, higher yield was observed in uninfested plants (223.98 g/plant) as compared to infested plants (124.96 g/plant).