A research experiment was conducted at Vegetable Research Farm, Punjab Agricultural University, Ludhiana during the summer and rainy seasons of 2021-2022 to study the effects of colour shade nets on different parameters of palak (Beta vulgaris var bengalensis). The experiment was set up in a split-plot design, with three replications, utilizing seven different coloured shade nets (red, blue, black, white, green with 50% and 70% shade level and open condition) in the main plot and seven distinct sowing times at monthly intervals from mid-April to mid-October in the sub-plot. From the results, it was examined that air temperature and light intensity were significantly lower under the various coloured shade nets in comparison to open conditions. The palak exhibited varying characteristics based on the conditions of shade nets. Specifically, the duration for germination (4.2 days), plant height (31.8 cm), leaf length (21.6 cm), leaf area (47.1 cm2), and overall yield (134.0 q/ha) were most pronounced when a green shade net with a 50% shading level was used. Whereas, dry matter content (10.5%) and chlorophyll concentration (8.75 mg/100g), showed improved results when a white shade net and red shade net were employed, respectively. The maximum cost-benefit ratio of 3.28 was achieved specifically in crops sown in August under a green shade net with a 50% shade level. Overall, it was observed that green colour shade net with 50% shade level may be recommended palak cultivation during summer months in Punjab conditions.