Color Changing Flowers | Fun Brains Experiment on Colored Carnations

Color Changing Flowers

Flowers are beautiful and can easily capture our mind. However, like other parts of the body, flowers too require nutrients. Color changing flowers experiment helps us to understand how stems function in a plant’s growth. This is a fun science experiment that can also be performed as a school project for children to demonstrate how plants absorb and transmit water and nutrients through its stem.


For performing this easy to do science experiment, you need some white flowers (white roses are perfect), some food colors, water, and containers to keep. See our video to understand this experiment better and try it all by yourself.

What is the logic of color changing flowers?

After keeping the stems of white roses in colored water for 24 hours, you will notice a small change in the colors of flowers. Keeping it for 48 hours or even more can make your flower look completely different from its actual color. This color change is due to the fact that stems can absorb water and passes to leaves and flowers. Though leaves too change colors, as the flowers we used were originally white in color, we can notice it quick and easy.

There are two major reasons for this color changing flowers phenomenon. The first one is transpiration, and it simply means the water in leaves and flowers gets evaporated and the plant cells need to replace those evaporated water particles. For this purpose the plant cells pulls up water (something like how a vacuum cleaner does).

The second reason for this color changing flowers experiment is capillary action. Capillary action is the ability of water to climb up through narrow tubes with the property of liquids called cohesion. Here, the tiny tubes in the stem helps liquid (colored water) to climb up easily and reach the flower petals.

Try this activity as transpiration science experiment or as capillary action project, you will be able to impress your teachers and friends through fun science trick.

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