Add fresh water daily and use warm water as this aids in uptake. If possible re-cut the stem every day by removing one to two inches. Use a sharp knife. Do this underwater as this allows the stem to draw in water instead of air. Keep the flowers cool.
Warm temperatures shorten the life of the blooms.
Avoid direct sunlight and heating vents. Warm air from ceiling fans will cause the flowers to fade. Appliances like televisions, computers, and stereos give off heat causing the flowers to dry out. Try this trick if the flowers start to wilt, remove the stem from the arrangement and re-cut the stem. Next, submerge the entire flower in warm water.