Science, Tech, Math › Science How to Make a Glowing Flower Real Flowers That Glow in the Dark Share Flipboard Email Print Tonic water, which contains quinine, can be used to impart a blue glow to a white flower. Rosemary Calvert / Getty Images Science Chemistry Projects & Experiments Basics Chemical Laws Molecules Periodic Table Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life Famous Chemists Activities for Kids 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 March 07, 2018 Use chemistry to make a real flower glow in the dark. Glowing Flower - Method #1 Test a highlighter pen to make sure it glows under black (fluorescent) light. Yellow is reliable, but some other colors glow brightly, too.Use a knife or saw to cut open the pen and expose the fibers which contain the ink. Remove the ink strip.Squeeze dye from the ink pad into a small amount of water.Trim the end of a flower so that it will be able to take up water. Place the flower in the water with the ink.Allow several hours for the flower to absorb the fluorescent ink. When the flower has taken in the ink its petals will glow under black light. Glowing Flower - Method #2 many flowersfluorescent light Pour some tonic water into a vase.Cut the end off of a flower so that it has a fresh surface.Allow several hours for the quinine to be incorporated into the petals of the flower.Turn on a black light and enjoy your flower. Glowing Flower - Method #3 Prepare glowing water using diet tonic water or any color of highlighter that you have established will glow under a black light. It's also possible to use thinned glowing paint.Find a glass or cup that is large enough to accomodate your flower. Fill this container with the glowing liquid.Invert the flower and immerse it in the liquid. Gently swish the flower around to dislodge any air bubbles, since areas with bubbles won't pick up the fluorescent or phosphorescent color.Allow your flower to absorb the dye. Just dipping the flower results in spotty coverage. If you want bright glowing flowers, allow the flowers to absorb the color directly into their petals for an hour or two. You can keep the stem of the flower hydrated by wrapping a bit of dampened paper towel around it.Remove the glowing flower from the liquid. You can place it in a vase filled with water or otherwise display it under a black light. Tips for Making a Glowing Flower White or pale flowers work much better than flowers with deeply colored petals. The pigment in the dark colored flowers blocks nearly all the glowing light.You need fresh healthy flowers. Flowers that are nearly dead won't drink the water and won't glow. It's possible you might be able to inject the ink directly into the flower head, but wouldn't you rather just use a fresh flower?Certain flowers work better than others. Carnations and daisies work better than roses. Basically any flower you can dye with food coloring works well for making a glowing flower. A Note About Glowing Chemicals how to make glowing flowers . If the videos involve giving the flowers a chemical that is already glowing or is fluorescent or phosphorescent under a black light, there's a good chance the instructions are legitimate. However, videos that call for you to mix unlikely chemicals like match heads and peroxide are a scam. Those chemicals will not make your flower glow. Don't be fooled!