The vase life of cut Narcissus flowers is generally short due to bent neck and wilting. This study was conducted to determine the effects of different concentrations of PBZ (0, 30, and 60) mgL-1 and CuSo4 (0, 150, 250) % on the vase life and their interaction on relative fresh weight, and water uptake of cut narcissus flowers (Narcissus tazetta L). Distilled water was used as the control. The analysis of length variances conducted on the effects of Paclobutrazol (PBZ) and Copper sulfate (CuSo4) on the duration of petal freshness the results showed that the different length of Narcissus flowers (20 and 30) cm significantly affected the length of narcissus flowers (20) cm gave the higher value 8.556 days compared to the 30 cm length gave 8.037 days. The maximum significantly delayed petal freshness shows when put the cut flower on preservative solution containing 150 % of CuSo4 which give 8.458 days. About the different concentration of Paclobutrazol (PBZ) which effected significantly on vase life, relative fresh weight and water up take the 30 mgl-1 obtaining a higher value 10.627 days, 57.722 g and 94.980 g. While the lower value of vase life obtained on 60 mgl-1 reached 10.508 days. About the interaction between the different level of CuSo4 and different concentration of PBZ on all parameter such as duration of petal freshness, vase life observed the maximum value reached 8.917 days, 11.515 day respectively when put the cut narcissus flower for 30 cm on jar containing 0 PBZ combine with 150 % CuSo4. Also, the relative fresh weight and water uptake give the maximum value when put the flower 20 cm length on jar containing 60 mgl-1 PBZ combine with 150 % CuSo4 and 30 mgl-1 combine 150 % reached 125.797 and 63.333 g respectively.