Flower extract of Quisqulis indica in acetone with four concentrations i.e., 25, 50, 75 & 100 % were tested to record persistent toxicity for 60 days on the Life cycle of rice moth, Corcyra cephalonica (Stainton) until the adult emergence of the second generation. Observations were made to determine mortalities and detrimental effects at various stages of the life cycle. The potential of this extract was evaluated on rice moth development by measuring the average developing duration & growth index and ultimately tallying the percentage of seed protection. It drastically reduced the adult emergence, controlling the rice moth population up to 90%. The timeframes for rice moth growth were dramatically accelerated by the application of various doses. Significant reduction in grain damage was observed, showing a 75.75 percent increase in seed protection compared to the control. This extract adversely affected fecundity and fertility of F1 generation adults as showed 45% reduction in egg laying and 30-40% eggs were non-viable. In order to control the population of this stored grain pest, Quisqualis Indica’s combined toxic, mild growth-regulatory, and sterilant effects were identified in the current investigation.