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Celery Science Experiment

The “Celery Science” experiment is a classic demonstration in the primary classroom. It clearly demonstrates how water moves though plants.

Samantha’s 1st grade class had this as a homework assignment and we of course couldn’t wait to do it. Both girls were so excited about the experiment and when they woke up in the morning they were shocked at what they saw!

This was the instructions we received:

Step-By-Step Procedure:

  • 1. Cut the pieces of celery to the same length, tall enough to fit into the glasses so they’ll be completely submerged by water. Make sure to chop off the bottom and the top at the leafy part so you’re left with the stalks.
  • 2. Fill each of your 6 glasses with an equal amount of water, about 3 inches from the top.
  • 3. Add 10 drops of red food coloring each to 3 of the cups.
  • 4. Add 10 drops of blue food coloring each to the remaining 3 cups.
  • 5. Place one piece of celery into each glass. After this step you’ll have 6 cups, 3 with red coloring and 3 with blue coloring and each with a stalk of celery submerged in it.
  • 6. After 2 hours, take a stalk of celery out of a glass with blue food coloring. Has the color of the celery changed? Use your vegetable peeler to peel the stalk of celery and see how far the change has gone. Write the results in your journal.
  • 7. Remove a stalk of celery at the intervals of: 2 hours, 4 hours, 8 hours, 24 hours, and 48 hours (you have 6 glasses, and thus 6 stalks of celery).
  • 8. After each interval has passed, remove a stalk and peel it, notating in your journal the changes to the celery after each interval.

About the Author

Amanda Acuña an influential Mom Blogger created MommyMandy as an online resource to the parenting community. She has four children and they currently reside in Texas.


  1. WOW, what great experiment and not a real messy one either. I am going to try this out over the weekend with the kids. Thank-you for posting!

  2. I did the same experiment when I was that age. There are a couple of classic “science experiments” from grammar school. Remember the “mold” experiment on bread about penicillin?

  3. Thanks for the details on this experiment – it will be fun to try with my boys this summer! We are always looking for more fun things to do when school is out!

  4. think i will have my step son try this or maybe suggest to his teacher to see if she would like the class to do

  5. Isn’t this kind of how flamingo’s become pink. I think it’s from their feathers absorbing the pink color from the shrimp, or something like that! LOL. Fun experiment!

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