Here are some of the hydrangea varieties that can change colors: Nikko Blue Hydrangea (Hydrangea macrophylla ‘Nikko Blue’) ...

Robyn Gola, Geneva A. It is difficult to get Hydrangea macrophylla `Nikko Blue’ to flower reliably in the Chicago area. This plant is winter hardy to Zone 6 (Chicago is in Zone 5) and its flower ...

macrophylla `Nikko Blue’ and H. macrophylla `Blaumeise ... may influence the color and tone of hydrangea blossoms. Acidic soils (pH 0 to 7) tend to deepen blue shades, while alkaline ...

Hydrangea macrophylla, the most common species of ... Acid soils bring out the blue in the hortensia (mophead type) 'Nikko Blue' and lacecap 'Blue Wave.' In alkaline soils, mophead 'Bodensee ...

Some cultivars are more likely to end up blue, like Hydrangea macrophylla 'Blaumeise' and Hydrangea macrophylla 'Nikko'. Too ...