E
EddieM
Have we got this the right way round?
The color of a hydrangea flower depends on the chemical makeup of the soil it is planted in. If the soil is high in aluminum and has a low pH, the hydrangea flower will be blue. If the soil has either a high pH or is low on aluminum, the hydrangea flower color will be pink.
Alkaline is high pH, and acidic is low pH?
The pH scaleTherefore, we already have an acidic soil, yes?
Anything below 7.0 is acidic, and anything above 7.0 is alkaline, or basic. pH scale, ranging from 0 (very acidic) to 14 (very basic/alkaline) and listing the pH values of common substances.
https://www.khanacademy.org/science/biology/water-acids-and-bases/acids-bases-and-ph/a/acids-bases-ph-and-bufffers#:~:text=The pH scale,-The pH scale&text=Anything below 7.0 is acidic,pH values of common substances.
Seems like I got it the wrong way round, I had thought hydrangeas colour was like litmus paper.