A field trial was conducted to workout the role of vesicular-arbuscular mycorrhizal (VAM) fungi in the production of china aster (Callistephus chinensis (L.) Nees) at different phosphorus levels. Three VAM fungi were tried viz., Gigaspora margarita, Acaulospora laevis and Sclerocystis dussii along with uninoculated control at four levels of phosphorus viz., 0, 50, 75 and 100 per cent of the recommended dose (120 kg ha ^-1). Among VAM fungi tried Gigaspora margarita was found to be the best in improving the plant height, number of branches, flower yield, P-uptake and economy of the crop production at 75 per cent of the recommended P doses. Suggesting a net saving of 25 per cent of the recommended P with VA Mycorrhizal inoculation. Higher benefit cost ratio was recorded with the inoculation of G. margarita resulting in actual benefit of Rs. 5613=00 per hectare over comparable uninoculated control given recommended dose of fertilizer.