Colour Changing Flowers Science Experiment - A fun science project for kids

This colour changing flowers science experiment for kids is such a fun science project. Whether you are looking for easy science experiments for preschoolers or for older kids this fun science experiment is perfect. Kids will be fascinated as they watch the flower petals changing colour and learn about how plants drink water! The rainbow coloured flowers look so pretty too! This cool science experiment is really easy to set up and the flowers change colour quite quickly (within about an hour) so there isnt too long to wait to see the change.


Colour Changing Flowers Science Experiment - A fun science project for kids or easy science experiment for preschoolers. This cool science experiment teaches children about how plants absorb water.


We love easy science experiements, but they have to be fun science experiments too! Here are a few of our favourite science experiments for preschoolers and older kids to enjoy. The skittles science experiment is a favouite as it is really easy to set up and the reaction is almost instant. The magic milk experiment is a lot of fun too, and again kids will be amazed by the reaction that takes place. 

If you dont mind a bit of mess, playing with frozen oobleck is lots of messy fun and children will learn a lot of science as they play without even realising it! The same could be said for painting with ice paints or getting invloved in some ice play. Learning science through play can be so much fun!

The most recent science experiment that we have enjoyed doing was the rainbow walking water science experiment. We have actually used the jars of coloured water created from the walking water experiment for the colour changing flowers experiment that we are sharing today. 

Below you will find step by step instructions for the colour chaning flowers science experiment. The flower experiement is easy to set up with only a few supplies needed. We hope that you have fun with this cool science experiement for preschoolers and older kids to enjoy! 


Colour changing flowers science experiement for preschoolers


Colour Changing Flowers Science Experiment - A fun science project for kids




Supplies needed for the colour changing flowers science experiment



  • White flowers
  • Glass jars
  • Scissors
  • Liquid water colour or food colouring
  • Water







What are the best flowers to use for the colour changing flower experiment?


You can use any white flowers for this colour changing flower experiment, we used large white daisys, but you could use white roses or carnations. The important thing is to use white flowers so that you can see the colour changes clearly. Make sure that you cut the stems diagonally across the bottom so they can drink up the coloured water easily. It is also important to make sure that the flowers are fresh, this colour changing flowers experiment won't work so well if the flowers are beginning to wilt. 

It would be fun to try out a selection of different white flowers to see which work best. 

Colour Changing Flowers Science Experiment for preschoolers


How to set up the colour changing flowers experiment 


STEP 1: Get your supplies ready for the flower experiment and predict what will happen


Before beginning this fun science experiment it is important to make sure that you have all your supplies ready and to hand. If you are planning to make this an experiment for preschoolers this is extra important as their attention span is shorter than that of older children.

Before beginning the science experiment talk to your child about what you are planning to do and see if they can talk about what might happen. You could even ask them to draw a picture of what they predict will happen. We have included a simple science experiment printable that you could use to record your child's predictions and then later the results. You can find this printable science experiment worksheet if you scroll down below. 

SCROLL DOWN FOR THE FREE SCIENCE EXPERIMENT PRINTABLE WORKSHEET


Colour Changing Flowers Science Experiment Printable Worksheet


STEP 2: Fill glass jars with coloured water


Kids will love being involved in this step. Fill each of the glass jars with a different coloured water. The easiest way to do this is to fill a jug with water and then carefully fill each of the jars with it. I would suggest filling the jars about half way. Once you are happy with the amount of water in each jar add a few drops of liquid water colour (or food colouring) to each jar of water. The more colouring you add the deeper the colour on the flower petals will be. To get brightly coloured flowers like those in the images we added 10 drops of liquid watercolour to each jar of water. 

Colour Changing Flowers Science Experiment for kids


STEP 3: Prepare the flowers



To prepare the flowers for this colour changing flowers experiment you will need to cut them so that they are slightly taller than the jars that you are using. You will need to cut the bottom of each flower with a diaganol cut so that the flower can easily drink the coloured water. Make sure (as mentioned above) that you use fresh white flowers so that you can see the full colour changing effect. 


STEP 4: Place the flowers into the coloured water 



Place one flower into each jar of coloured water (or more if you want!) and then watch as the flowers change colour.


easy science experiment for preschoolers


cool science experiment for kids - colour changing flowers


How long does it take to change the colour of a flower with food colouring or liquid watercolour?


The flowers won't change colour instantly, but after an hour or so you will start to see a little colour appearing on the petals. After a few hours the petals will all begin changing colour and if you leave the flowers in the coloured water overnight the colour will continue to get deeper. The flowers in the images below were left overnight. 



color changing flowers science experiment for kids


color changing flowers science experiment for preschoolers

The science behind the colour changing flowers science experiment. 


This easy science experiment for preschoolers gives you the perfect opportunity to talk to your child about how a plant drinks water. The coloured water used in this experiment demonstrates how water is sucked up through a plants stem and then makes it's way to the different parts of the plant including the flower. This fun experiment is a perfect beginners science experiement for children who want to learn about how flowers absorb water.

fun science experiment for kids about how plants absorb water

Daisy (aged 3) loved that she was able to make her own rainbow flowers. She was especially impressed the following moring when the flowers had changed into brightly coloured flowers.

She loved making her own bunch of rainbow flowers before taking them over to her mud kitchen to play with them.


how to make colour changing flowers - rainbow flower science experiemnt for preschoolers


DOWNLOAD THE FREE SCIENCE EXPERIMENT PRINTABLE WORKSHEET BELOW

To download this science experiment prinatble worksheet for free add $0 and click on the 'I want this' box below. It may take a moment for the page to load so please be patient.

For personal use only. Not for redistribution. All images are copyrighted. When sharing this printable please link directly to this blog post and not to the PDF. Thank you.

Get the science experiement worksheet




If your little one enjoyed this science activity you might want to take a look at our other fun science experiements too! Here are a few of our favourite science experiments for kids


Cool Science Experiments for Preschoolers (and older kids too!)



Skittles science experiment
Walking water science experiment
Magic milk experiment
Frozen oobleck
Ice play




Colour Changing Flowers Science Experiment - A fun science project for kids or easy science experiment for preschoolers. This cool science experiment teaches children about how plants absorb water.

This colour changing flowers science experiment for kids is a perfect beginners science experiment for preschoolers. We hope that your child has had fun exploring and discovering new things as they have tried out this cool science experiement. 


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