Hydrangeas (aka hortensia) act as natural pH indicators. Their flowers turn blue when the soil is acidic, and pink when the soil is alkaline.

Because of this, the Hydrangea is also known as the “Change Rose”
Hydrangeas (aka hortensia) act as natural pH indicators. Their flowers turn blue when the soil is acidic, and pink when the soil is alkaline. Because of this, the Hydrangea is also known as the “Change Rose”
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