Its flowers can be pink, white, or blue, depending in part on the pH of the soil. In relatively acidic soils, with a pH between 4.5 and 5, the flowers turn blue; in more alkaline soils, with a pH between 6 and 6.5, the flowers turn pink; and in alkaline soils with a pH around 8, the flowers grow white.
When do hydrangeas bloom?
Hydrangeas produce inflorescences from early spring to late fall, they are found grouped in bouquets in the end of the stems.