a 'Limelight' panicle hydrangea is hardy in USDA zones 3 to 9, while a 'Nikko Blue' bigleaf hydrangea is hardy in zones 6 to 9). This difference affects when buds form. Panicle hydrangeas go ...
Here are some of the hydrangea varieties that can change colors: Nikko Blue Hydrangea (Hydrangea macrophylla ‘Nikko Blue’) ...