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An experiment was conducted at Agroforestry Field Laboratory of Bangladesh Agricultural University, Mymensingh during the period from 20 March 2013 to 25 July 2013 to observe the performance of two summer vegetables viz. Kangkong and indian spinach in alley cropping system with Ipil-ipil tree (Leucaena leucocephala) following Randomized Complete Block Design (RCBD) with three replications. Different treatments of the experiment were T0= Control (without fertilizer and manure), T1= Ipil-ipil leaf biomass (ILB) as manure, T2= ILB+ 1/4 RFD (Recommended Fertilizer Dose), T3= ILB+ 1/2 RFD (Recommended Fertilizer Dose). Growth and yield of these two vegetables was recorded in this alley cropping system. It was found that growth parameters viz. plant height (cm), number of branches per plants, number of leaves per plants, leaf size (length× breadth, cm2), stem girth (cm) and weight per plant (g) of both kangkong and indian spinach were almost similar in all manure/fertilizer treated plots. Performance of these two summer vegetables in terms of growth and yield parameters remarkably lower in control plot ie, without manure/fertilizer treated plot. Yield of both kangkong and indian spinach was statistically similar with all fertilizer treated plots but it was drastic reduced in without fertilizer treated plots. The highest yield of kangkong and indian spinach was 42.68 and 53.71 t/ha respectively in ILB and ½ RFD treated plot and lowest was 17.11 and 22.10 t/ha respectively in control plot. Yield of all kangkong and indian spinach was 5-7% and 10-12% lower in ILB+ 1/4RFD treated condition and only ILB treated condition respectively …