An experiment was conducted at Campus Research Farm, B.R.D. (P.G.) College, Deoria, (U.P.) during the rabi season 2014-15 and 2015-16 to assess the influence of different mulching on the growth and yield of onion. The experiment was laid out in randomized block design with three replications. Treatments of the experiment were seven types of mulching such as control (M₀), Rice straw (M₁), Water hyacinth (M₂), Baggage straw (M₃), Wheat straw (M₄), Grass straw (M₅) and Pipal leaf straw (M₆). The results revealed that growth parameters viz. plant height, no. of leaves, bulb length, bulb diameter, bulb weight and bulb yield were increased significantly with adopting mulching. The maximum plant height, no. of leaves, bulb length, bulb diameter, bulb weight and bulb yield were recorded under Pipal leaf straw. Interestingly, the plant height, no. of leaves, bulb length, bulb diameter, bulb weight and bulb yield did not show significantly differences between M₆ and M₃. So, mulching with Pipal leaf straw and water hyacinth numerically gave the highest yield 38.00 t/ha, 38.40 t/ha and 37.50 t/ha., 37.60 t/ha during both years of experimentation, respectively.