Vase life of Eustoma grandiflorum as affected by aluminum sulfate

A floral preservative solution containing aluminum sulfate at 150 mg L^(-1) under 25℃, extended cut eustoma (Eustoma grandiflorum Shinn. cv. Hei Hou) vase life. The vase life was about 15 days for cut flowers supplied with aluminum sulfate, whereas the vase life of the water controls was only 8 days. The fresh weight of cut eustoma flowers treated with aluminum sulfate continued to increase up to 8 days after vase treatment, then declined thereafter. By contrast, the fresh weights of cut eustoma flowers in water controls began to reduce at the 6th day after vase treatment. The water loss from cut eustoma flowers treated with aluminum sulfate was lower than that of water controls during vase period, and the reverse was true for water uptake.