Rainbow Cabbage Experiment

Ever wonder how a plant absorbs water and spreads it throughout its stem and leaves? This rainbow cabbage experiment will show you just that, all while using the colors of the rainbow.

What You’ll Need:

  • 6 clear plastic cups or jars
  • Cabbage leaves
  • Food coloring
  • Spoons


Step 1: Line up your cups or jars on a flat surface. Fill each 1/3 of the way with cold water.  

Step 2: Add food coloring to each jar to create a rainbow or set of various colors (we did red, orange, yellow, green, blue and purple, but you can do any colors you would like). Use a spoon in each cup or jar to stir the food coloring into the water.

Step 3: Place one cabbage leaf in each cup or jar, making sure it stays upright and the top part of the leaf is out of the water. 

Step 4: Let your leaves soak for a few hours to overnight! You’ll notice your leaves will start to change color as the leaves absorb the colored water. After a couple of days, the leaves should be very bright in color. Notice how the leaves absorbed the water and the water spread to the top and very edges of the leaves, just like a plant after soaking up a spring rain shower!

Inspired by Growing a Jeweled Rose Rainbow Cabbage Experiment.

Check out other Science & Math Activities from Camp Little Victors:

Find more science and math activities from Camp Little Victors.