You know if you put fresh cut flowers in water it will help keep them from wilting. If you have a packet of cut flower preservative from a florist or the store, it will helpthe flowers to stay fresh much longer. You can make cut flower preservative youself, however. There are several good recipes, made using common household ingredients.
Keys to Keeping Cut Flowers Fresh
Give them water.
Give them food.
Protect them from decay or infection.
Keep them cool and out of direct sunlight.
The floral preservative provides flowers with water and food and contains a disinfectant to prevent bacteria from growing. Making sure your vase is clean will also help. Discard any decaying leaves or flowers, because the freshness of flowers is influenced by the gases and bacteria found on wilted or rotting plant material. Also, don't set your flowers near ripe fruit, because the chemicals from the fruit (such as ethylene) will 'ripen' your flowers. If you can, keep your flowers in a cool location and out of sun. Minimize air circulation, since it speeds evaporation and can dehydrate your flowers.