CARING FOR FLOWERS
All flower stems are like straws that drink up water to provide nutrients to the plant. Stems begin to seal off within seconds of being cut, so all cut flowers -including roses - should be re-cut immediately prior to being dropped into a vase full of water.
In order to ensure that your arrangement lasts at least a week or more, remember to change the water in the vase as often as possible to avoid bacterial growth, which causes wilting. Re-cut the flower stems and drop them right back into the vase filled with fresh, room-temperature water in order to keep your design looking beautiful for as long as possible.