Hydrangea plant's petals change to which color upon the addition of acids?

Question

MathG33k · Answer

If it's a pH below six it's blue, if it's a pH between 6 and 7 then it would be purple, if it's above 7 it would be pink or red

Anonymous · Answer

Hydrangea plants change color based on soil pH: they turn blue in acidic conditions and pink in alkaline conditions. This is due to the solubility of aluminum ions, which react with flower pigments. Adjusting the soil's pH can enable gardeners to control the flower color. 
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Hydrangea plant's petals change to which color upon the addition of acids?

Answer (2)

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