This model will show you how to adjust the pH of soil to grow different plants. Using hydrangea plants to demonstrate what happens when you go from a acid to a base. the acid soil will show a blue flower, netural soil a white flower,and base soil will show a pink flower.Taking soil samples and placing in a graph will show you a picture of the condition of the soil and what is needed in the soil to aquire the desired soil pH.

This project is supported, in part,
by the

National Science Foundation

Opinions expressed are those of the authors
and not necessarily those of the National Science Foundation.