To prolong the life of cut flowers, store them in a clean vase, ensure they get enough water and place them in the water right after cutting. Many flowers do better when the bottom two inches are trimmed to let the sap escape.
Only store cut flowers in a thoroughly washed, clean vase. This helps to remove bacteria that would have otherwise killed the flowers. Remove the lower leaves from the flower stems before putting them in the water. Cut 1-2 inches at an angle while the flowers are under water. This helps to keep air from getting into the stems while cutting them. Vase solution is another good option for extending the life of cut flowers.