Another science fair idea: Make rainbow roses by splitting the stems into strands and placing each one in food coloring. The roses draw the food coloring into the petals.Hmmm not a bad idea for Amarah's Science Fair Project!
This would be very easy for kids to participate in. Just buy white carnations and add food coloring to the water in the tubes and watch the flowers change color. this would be very easy for high school and middle school kids.