1. Mix one colour into each of your four glasses. The stronger the colour of the water, the more effective the experiment will be.
2. Place your first carnation into the glass of your choice. You may need to trim the stem if it is too long.
3. Place your second carnation into another glass.
4. Take your final carnation and, with an adult’s help, slice the stem lengthwise so that it looks like two smaller stems, both of which remain attached to the flower.
5. Place one half of the stem into your third glass of coloured water and the other half into the fourth and final glass.
6. Place the flowers out of the sunlight and wait a day or so. Then look at each of the flowers.
Through a process called capillary action, water travels up through the stems of plants until it reaches the outermost parts of the flowers. The flower of each carnation turned the colour of the water it was sitting in. Even more interesting is that the split stem produced a flower with both colours in it. You could easily repeat this experiment with other flowers and other colours to see if they behave in the same way.