Bright blue, pink, or purple blossoms are hydrangeas’ claim to fame, and it’s been rumored that growers can change any color of a hydrangea with relative ease. This long-held belief has a grain of truth to it: certain breeds of hydrangea do change, and it’s possible for a grower to control the color of those blossoms by tweaking the soil. However, you must remember the following tips for a successful switcheroo:
- White hydrangeas, as a rule, do not change color.
- Hydrangeas’ blossom colors rely on the pH of the soil.
- Looking to change your pink hydrangea to blue? Easy. Just add aluminum to the soil. Looking to change it back again? Not so easy—you’ll now need to eliminate aluminum from the soil.
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