hydrangeas - Knowledgebase Question

Peachtree City, Ge

Question by nantra_8
July 3, 2010

What do I need to add to soil to make hydrangea that is now blue change to pink?

Answer from NGA
July 3, 2010

0	You can change the color of hydrangea blooms with a simple soil treatment, but the treatment must be started in the early spring to have any effect on the flowers. Pink and red hydrangeas often turn blue or purple in acid soils, and plants can be made red by liming the soil or applying superphosphate. To make the flowers pink, broadcast one cup of dolomitic lime per 10 square feet and water it into the soil.

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