Fill a bucket one-third full of cold water. Use a separate bucket for daffodils because their stems emit a compound that is toxic to other flowers. Gather flowers in the morning when they are filled with stored food and are most fragrant. Choose flowers in bud, not fully opened blooms.
Cut the stems on a slant with a sharp non-serrated knife. Submerge immediately into cold water. Cutting on a slant exposes more stem surface area for absorption of water. Remove leaves that fall below the water.
Choose a vase about half the height of your cut stems for best display. Clean glass, pottery or porcelain vases are ideal. Avoid metal containers because some metals can alter the pH of the water, which in turn shortens flower life.
Add 2 tbsp. fresh lemon juice, 1 tbsp. sugar and 1/2 tsp. bleach to the vase. Fill with water the same temperature of the water in bucket, to within 2 inches of the vase top. Stir to mix and dissolve the ingredients. The citrus adds acidity, which makes the pH of the water more near the acid pH of the flower. Most water supplies are alkaline and can diminish the life of fresh flowers. The acidifier also stabilizes the color of the flower. Bleach acts as a microorganism growth inhibitor, minimizing bacteria and fungi that would otherwise enter the cut surface of the stem and multiply. Sugar supplies energy to the cut flower parts.
Add cut flowers to the vase, one by one from the bucket of water. Allow room between the flowers so as not to damage petals. Change the water completely every two days for optimum flower life. Display out of direct sunlight.