Abstract: Pot experiments were conducted during the planting season of 2015 at the green house of the Federal College of Forestry, Ibadan to evaluate the effect of leguminous plant leaf compost on the growth and yield of Celosia argentea L. There were six treatments including control (leaves of Chromolaena odorata, Cedrela odorata, Vigna unguiculata, Albizia lebbeck, and Mucuna poggei ) The experiment was laid out in a Complete Randomized Design (CRD) and replicated five times. Leaf composts were applied at the rate of 200g/2kg of top soil. Data were collected on plant height, number of leaves, stem girth and yield for twelve weeks. Data collected were subjected to analysis of variance (ANOVA) and significant means were separated using Duncan Multiple Range Test (DMRT). The results showed that C.argentea treated with Mucuna poggei leaf compost significantly (p<0.05) gave the highest plant height compared to other treatments and control. Similarly, Mucuna poggei leaf compost significantly (p<0.05) gave the highest leaves production and stem girth compared to other treatment and control. Highest yield was recorded on plant treated with Mucuna poggei compost (67.60g/plant). Therefore, use of Mucuna poggei leaf compost as soil amendment for the cultivation of leafy vegetable should be encouraged since it enhances plant growth, yield readily available and environmentally safe.