Cut the daffodil blooms first thing in the morning with a pair of sharp scissors or floral knife. The morning is when the flowers are at their most fragrant.
Place the flowers carefully into a basket or hold them loosely in your hands. Check the flowers for any insects and remove any dead or wilting leaves and blooms.
Hold the the tips of the daffodil stems under cool running water. Cut the bottom 1-inch of the stems at an angle with sharp scissors or floral knife. Cutting the stems at a diagonal will allow them to more effectively absorb water.
Fill a vase 1/4 full with warm water. Add floral preservative, available at a local florist, to the water. If unavailable, add 1 tbsp. sugar or white vinegar to the water to help increase the bloom's longevity
Arrange the flowers inside the vase. To keep the blooms more vibrant, store the vase in a cool spot, away from direct sunlight.
Change the water and floral preservative every two to three days.