Start with a very clean vase. Fill it about halfway with fresh, cool water. Add the included cut-flower food to the vase. Hold each stem next to your vase to gauge how much you'll need to trim. Remove any blooms that fall below the waterline; submerged flowers can rot and encourage bacteria that shorten bloom life. Using a sharp knife or floral shears, cut stem ends underwater at a 45-degree angle. This prevents them from sitting flat in the vase and allows for better water absorption. Arrange the flowers in the vase as desired.
Recondition the flowers every two to three days: Recut the stems, change the water, and add nourishment. To freshen your flowers after the flower food is used up, refill your vase with a solution of one teaspoon sugar and two drops liquid bleach per gallon of fresh, cool water. Freesias are especially sensitive to ethylene, a gas that causes cut flowers to deteriorate rapidly. Keep the blooms away from possible sources of this gas, which include wilting plants and ripening fruits and vegetables. Keep the flowers away from drafts, direct sun, and excessive heat.