Dying Flowers

Over the Easter holidays Pickle and I decided to try and dye some flowers. We had a lovely chat about how plants get their water and how it travels around the plant. I would be interested to try this experiment at some point with a potted plant rather than cut flowers to show the involvement of the roots...I think this level is sufficient for now but it would be an interesting extension.

So Pickle had tried this experiment at preschool but they did not see a very strong colour change. When we did it we decided to make the colour of the water very concentrated. We used a lot of food colouring, so much that the water was very dark and you couldn't easily see which colour was which from first glance.

We also cut some of the stems very short to see what difference that would make....

It turns out quite a lot! The shorter stems meant that the colour showed up in the flowers much faster, within a couple of hours.

 After an extended period of several days the shorter stemed flowers also had a more intense colour. I would conclude that this is due to the fact less of the colouring is lost on the way up, in the stem and remaining leaves for instance.

I love the pretty striping of the colours running through the veins of the petals.

The blue and red were more successful than the green colouring. We swapped a red and blue flower over to see if the colours would mix afterwards. They didn't. When placed in the blue water the red one went blue with just some red patches left at the tips of the petals; the blue flower stayed blue in the red water. This gives me ideas about future experiments mixing the food colouring to make purple before adding the flowers....what would happen? The green colouring did give green lines in the petals rather than blue and yellow so I don't really expect a chormotographic effect....but I am not sure what would happen, it might be an interesting conversation to have with Pickle in the future after some chromatography adventures....

Until next time...