1 To keep your flowers looking better and lasting longer, display them in a vase and make sure that none of the leaves are covered with water. Leaves decay in water, and they’ll drastically decrease the vase-life of your cut flowers.
2 First things first: When you bring flowers home, cut the stems at an angle and then place them in fresh water for a nice long drink before removing the wrapping.
3 When the water in a vase starts getting low, don’t dump it and start all over again. Flowers are at their happiest when you just top off the existing water by adding some that is fresh.
4 Decorating a buffet with flowers? Keep the flowers away from fruit – fruit gives off ethylene gas, which accelerates the aging process of flowers.
Tips via Style At Home