How To Make Hydrangeas Pink (Yes, They Can Change Color!)
1. Choose the Right Hydrangea Only the flowers of bigleaf hydrangea (Hydrangea macrophylla) and mountain hydrangea (H. serrata) can change color. Other types like oakleaf hydrangeas (H. quercifolia) or smooth hydrangeas (H. arborescens) such as ‘Annabelle’, cannot change their flower colors, naturally blooming in white, cream, or dusty pink. These plants are just as full and beautiful, but if your goal is deep pink hydrangeas, make sure you’re planting varieties that can turn that color....