Abstract: Tall fescue is a popular turfgrass species used in Chinese transition zones but it suffers from both heat and drought stress in summer. A field study was conducted at Hefei, Anhui, in 2009, to 1) assess the effectiveness of irrigation and fertilizer treatments on regulation of drought/high temperature stress tolerances of two tall fescues (Fie phoenix and Coalnaduo), 2) determine the optimum fertilizer and irrigation treatments that result in the most drought resistance and persistence of turfgrasses. 1) The stress resistance of tall fescue under different irrigation and fertilizer treatments significantly improved, MDA contents decreased, POD activity increased, chlorophyll contents were raised, relative water contents increased, tillers and leaves per unit area were higher, and moderate irrigation improved root growth. In addition, visible turf qualities were upgraded with different fertilizer and irrigation treatments; 2) Almost all the resistances of Fie phoenix were better than those of Coalnaduo, but the differences were not significant; 3) Both irrigation and fertilization significantly improved stress resistant, but the interaction effect between irrigation and fertilization was not significant. 4) B1C1 was the optimal irrigation and fertilization culture to increase stress resistance in summer; 5) The resistant mechanism for adaption to high temperate and drought stress in summer, differed in the various varieties and was favored by breeding/selecting and culture management in summer.