I'm sure you've seen beautiful hydrangeas of different colors. If you wish for a specific flower color on your hydrangeas, you may wonder: do you have to buy them that way, or can you change them ...
Shift your bigleaf hydrangeas from blue to pink or vice versa.
Hydrangea macrophylla (Bigleaf Hydrangea): This variety is most commonly affected by soil pH. It includes both Mophead and Lacecap types. The color change is most dramatic in these hydrangeas.