Hydrangea macrophylla 'Nikko Blue'
More About Hydrangea macrophylla 'Nikko Blue'
- Tight, globular heads of blue florets, depending on the soil's pH
- Flowers on old wood only
- Medium green leaves
- Upright, rounded habit
- Bloom Time: Summer
Hydrangea arborescens: Blooms on new wood, prune in late winter or early spring.
Hydrangea macrophylla: Blooms on old wood, do not prune. Remove only spent flowers and dead, damaged or unsightly wood.
Hydrangea paniculata: Blooms on new wood, prune in late winter or early spring.
Hydrangea quercifolia: Blooms on old wood, do not prune. Remove only spent flowers and dead, damaged or unsightly wood.
Hydrangea serrata: Blooms on old wood, do not prune.
Nikko Blue Hydrangea Growing and Maintenance Tips
All hydrangea naturally undergo some colour change to their flowers as they age. Adjusting the pH balance of the soil (the addition of aluminium sulphate) can change the flower colour from pink to blue in this cultivar. Most cultivars thrive in full sun to partial shade as long as they have adequate moisture and a rich, well-drained soil.
Hydrangea macrophylla 'Nikko Blue' Characteristics
Soil MoistureMoist to Average
Flowering TimeLt. Sum-Fall