The antioxidant activities of the water and ethanol extracts of F. koreana flowers were evaluated using DPPH, superoxide anion (•O(-2)), and nitric oxide (•NO) radical scavenging activity assays. The SC(50) values of the water extract of F. koreana on DPPH, •O(-2) and •NO were 48.39, 24.36 and 100.21 µg mL(-1), respectively. The SC(50) values of the ethanol extract of F. koreana on the aforesaid free radicals were 57.50, 49.00 and 146.08 µg mL(-1), respectively. Further, the total phenolic contents of both extracts were determined and expressed as milligram gallic acid equivalent (GAE) per gram of extract. The water extract exhibited a higher phenolic content (113.78 mg GAE g(-1)), while the ethanol extract showed 94.53 mg GAE g(-1). Our findings demonstrate that the water and ethanol extracts of F. koreana flowers might be potential natural sources of antioxidative additives for use in the food and other allied industries.