Eco-friendly weed management is crucial for enhancing crop productivity while preserving ecological balance. A field experiment was conducted at the Centre for Organic and Natural Farming Research, Sardarkrushinagar in loamy sand soil, during the Rabi seasons from 2019–20 to 2021–22 to evaluate different weed management strategies in organic Rabi fennel. A Randomized Block Design (RBD) with three replications was used. Eight weed management treatments were tested, viz. stale seed bed followed by (fb) hand weeding (HW) at 30 days after sowing (DAS); castor shell mulch 5 t/ha fb HW at 30 DAS, mustard straw mulch 5 t/ha fb HW at 30 DAS; sunn hemp mulch 5 t/ha fb HW at 30 DAS; wheat straw mulch 5 t/ha fb HW at 30 DAS; interculturing (IC) fb HW at 30 DAS and 60 DAS fb earthing up at 70 DAS; IC at 30 and 60 DAS fb earthing up at 70 DAS and weedy check.  Among the eight treatments, IC fb HW at 30 and 60 DAS and earthing up at 70 DAS significantly improved fennel plant height, branch number, seed, and stalk yield followed by treatment with stale seed bed fb HW at 30 DAS, which also recorded the highest umbels per plant. IC fb HW at 30 and 60 DAS and earthing up at 70 DAS resulted in the lowest weed density and biomass at 50 DAS, with the highest weed control efficiency (66%). The lowest weed density at 25 DAS and weed index were observed in the stale seed bed fb HW at 30 DAS. Furthermore, organic carbon and available N, P, and K were highest under IC fb HW at 30 and 60 DAS and earthing up at 70 DAS, it was found at par with wheat straw mulch 5 t/ha fb HW. Economically, IC fb HW at 30 and 60 DAS and earthing up at 70 DAS also yielded the highest net return, while stale seed bed fb HW at 30 DAS had the highest benefit-cost ratio (2.49).