Six inbred line of summer squash were cultivated in open field to deterred horticulture traits. Under unheated plastic house, the sensitivity of six inbred lines to the red spider mite Tetranychus urticae Koch and the white fly Bemisia tabaci (Gennadius) were evaluated in two successive seasons (2023 and 2024). Significant differences among inbred lines were observed in mean performance for all studied traits. High heritability was observed for all traits, viz., days to female flower anthesis DFF (80.45%), days to male flower anthesis DMF (89.20%), fruit weight FW (95.14%), fruit number/ plant FN (96.96%), fruit length FL (83.08%), fruit diameter FD (8.65%), early yield EY (91.02%) and total yield TY (97.93%). Inbred, 280/9 (P2) was the most resistant to the red spider mite, while inbred 270/5 (P3) was the highest resistant to the white fly in two growing seasons. When Beauveria bassiana fungi was used to control the red spider mite and whitefly, inbred line 240/3 (P5) showed the highest reduction rate at 88.05% and inbred line 270/5 (P3) also achieved significant control with a reduction rate of 83.50%, in red spider mite, for two seasons, respectively. B. bassiana fungi was the most effective in controlling whiteflies on inbred line 280/9 (P2), achieving reduction rates of 81.45% in 2023 and 73.26% in 2024. Similarly, lemongrass oil reduced red spider mite populations on inbred 222/2 (P1) by 90.44% in 2023 and 84.55% in 2024. Additionally, lemongrass oil reduced whitefly populations by 86.46% and 81.52% in 2023 and 2024, respectively.