Science, Tech, Math › Science Cut Flower Preservative Recipes Keep Your Flowers Beautiful Longer Share Flipboard Email Print JGI/Jamie Grill/Getty Images Science Chemistry Activities for Kids Basics Chemical Laws Molecules Periodic Table Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life Famous Chemists Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. our editorial process Facebook Facebook Twitter Twitter Anne Marie Helmenstine, Ph.D. Updated September 08, 2019 You know if you put fresh cut flowers in water it will help keep them from wilting. If you have a packet of cut flower preservative from a florist or the store, it will help the flowers to stay fresh much longer. You can make cut flower preservative yourself, however. There are several good recipes, made using common household ingredients. Keys to Keeping Cut Flowers Fresh Give them water.Give them food.Protect them from decay or infection.Keep them cool and out of direct sunlight. The floral preservative provides flowers with water and food and contains a disinfectant to prevent bacteria from growing. Making sure your vase is clean will also help. Try to minimize air circulation, since it speeds evaporation and can dehydrate your flowers. Preparing the Flowers Start by discarding any decaying leaves or flowers. Trim the bottom ends of your flowers with a clean, sharp blade before arranging them in the vase containing the floral preservative. Cut the stems at an angle to increase the surface area for water absorption and to prevent the ends from resting flat on the bottom of the container. The Water In all cases, mix the floral preservative using warm water (100–110° F or 38–40° C) because it will move into the stems more effectively than cold water. Clean tap water will work, but if yours is very high in salts or fluorides, consider using distilled water instead. Chlorine in tap water is fine since it acts as a natural disinfectant. Select one of the following recipes and use it to fill your vase instead of plain water. Recipe 1 2 cups lemon-lime carbonated beverage (e.g., Sprite or 7-Up)1/2 teaspoon household chlorine bleach2 cups warm water Recipe 2 2 tablespoons fresh lemon juice1 tablespoon sugar1/2 teaspoon household chlorine bleach1 quart warm water Recipe 3 2 tablespoons white vinegar2 tablespoons sugar1/2 teaspoon household chlorine bleach1 quart warm water More Tips Trim away any foliage which would be below the water line. The wet leaves encourage microbial growth that can rot your flowers.Remove any unnecessary leaves because they will accelerate dehydration of the flowers.Flowers with milky latex-containing sap require special treatment. Examples of these flowers include poinsettia, heliotrope, hollyhock, euphorbia, and poppy. The sap is meant to prevent water loss by the stem, but in a cut flower, it keeps the plant from absorbing water. You can prevent this problem by dipping the bottom tips (~1/2 inch) of the stems in boiling water for about 30 seconds or by flashing the tips of the stems with a lighter or other flame.