Archive for the ‘Bigleaf hydrangea (H. macrophylla)’ Category

Changing Bigleaf Hydrangea Flower Color

                Bigleaf hydrangeas (Hydrangea macrophylla), aka “hortensia” hydrangeas, bear pink flowers in low acidic and alkaline soil and blue flowers in mildly acidic soil. Some tips about regulating soil pH and flower color in bigleaf hydrangeas follows. First, a short review about soil pH. Soil pH measures soil […]