The response of (Vetiveria zizanioides, L. Nash) to organic fertilizer i.e. compost, chicken manure and feldspar (12 % K2O) + rock phosphate (20 % P2O5) with microorganism (Bacillus megatherium var. phosphaticum and B. circulanse) in comparison with recommended chemical NPK were studied. In both tested seasons, the fertilization with compost (2 ton/fed.) + Chicken manure (2 ton/fed.) + 100kg feldspar + 100 kg rock phosphate mixed inoculation with Bacillus megatherium var. phosphaticum and B. circulanse were resulted the highest values of plant height, root length, number of tillers, fresh and dry weights of roots and shoots as well as oil % and oil yield.