The effect of 1-MCP combined with Clorox and sucrose was studied. Cut flowers of Dianthus caryophyllus 'Gioko' were treated with 1-MCP 0.5 g m ^-3 for 6 hours at 20°C. Clorox in 2 ml L^-1 and sucrose 10-50 g L^-1 concentration was added. The treatments with 1-MCP increased the vase life with 5 days, and the sucrose in low concentrations improved the ornamental quality of the flowers. The SPAD values increased till the 6^th day. The 1-MCP treatments gave much better results compared to the control and Spring as well, and it seems to be possible to replace Spring with 1-MCP treatment.