Hydrangea Plants

Hydrangea Colors

Zone South Africa | morag.goddard added on November 21, 2016 | Answered

Does the color of hybridized hydrangeas change if you change the pH of the soil? I heard a few years ago that newer varieties or hybridized hydrangeas keep their original color. Is this true?

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Certified GKH Gardening Expert
Answered on November 21, 2016

Hydrangeas with white flowers cannot change their color. But I do think all blue and red/pink hydrangea varieties can change their color if the soil pH is changed sufficiently. Some varieties may require an even larger pH change than others to chage their color, though.

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