The efficacy of combinations of cinnamon and clove oil showed good potential to inhibit growth of all fungi causing postharvest decay of grapes. To control the growth of these fungi effectively by binary mixture of clove oil and cinnamon oil required higher ratios of cinnamon to clove oil. The optimum ratios of clove and cinnamon oil to control growth of these fungi were 3:7, 2:8 and 1:9 and their MIC was 400 mg/ ml.