Monday, November 22, 2010

What type of flower changes color because of ph level?

We are doing a science project about how ph level will affect the color pigments in flowers. So we need a fast growing flower that will change color when we change the ph level. I heard about hydrangeas, but they take a long time to grow. Any other flowers?What type of flower changes color because of ph level?
Hydrangea is the classic example, and you can buy a compound in garden centers, that you can use to change pink hydrangeas to blue - acidity based I think, but you can try sequestered iron compound.



With other plants you may get some change, but probably not as dramatic. Flowers which vary from pink to white are a good bet, such as Michaelmas daisies and Dactylorrhiza orchid species which we have growing here in London, UK.

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