 This will allow the flowers to last even longer.Other ways to care for vase flowers includes keeping flowers away from ceiling fans and air-conditioning vents as this can lead to dehydration, keeping flowers away from fresh fruit of vegetables, using filtered water rather than tap water so as to avoid both chlorine and fluoride, and keeping flowers away from your television.There is also a market for 'everlasting' or dried flowers, which include species such as Xerochrysum bracteatum.