<p>The growth in organic waste generation from agriculture and homes and excessive use of chemical fertilizers call for sustainable nutrient management practices. We investigated the impact of vermicompost made from rabbit manure (R_m) and plant/kitchen waste (P_w) in five proportions (0-100%) on compost properties, vegetable growth, and soil fertility. The vermicomposting process, utilizing the earthworm species <i>Eisenia fetida</i>, spanned 75–120 days, following which it was administered to tomato, lettuce, and carrot plants in the laboratory. The physical and chemical characteristics of the compost were affected by the feedstock. Higher P_w resulted in lower pH, electrical conductivity (EC), and bulk density, but higher organic matter, porosity, and water retention. However, Rm-dominated treatments had greater macronutrients and micronutrients. The 50% R_m: 50% P_w amendment provided an ideal C/N ratio (21), improved enzyme activity, and a diverse microbial community. All treatments significantly improved crop yields over the control, with the 50:50 mixture achieving maximum yield for tomato (10.2&#xa0;kg m⁻²) and lettuce (4.5&#xa0;kg m⁻²), while P_w-rich treatments were best for carrot yield. Soil quality was significantly enhanced (structure, CEC, and microbial activity). The results show that the R_m:P_w ratio affects the quality of the vermicompost and enables sustainable waste valorization and soil fertility. This research provides an R_m:P_w compositional approach to link feedstock ratios to compost maturity, microbial community, crop yield, and soil properties after application. It reveals an optimal R_m:P_w ratio (50:50) that optimally balances compost stability, crop performance and environmental benefits, offering a scalable approach to integrated organic waste valorization in circular food systems.</p>