Nikko Blue Hydrangea – Iconic Blue Garden Blooms
Nikko Blue Hydrangea is a beloved mophead hydrangea prized for its intense blue flower clusters. Blooming from early to mid-summer, its color is most vivid in acidic soil, making it a garden favorite for striking color displays.
This deciduous shrub is excellent for borders, foundation plantings, or shaded beds. With minimal care and long-lasting blooms, it's a go-to for traditional landscapes or cottage-style gardens.
- � Brilliant blue mophead blooms (in acidic soil)
- � Summer-blooming beauty with bold color
- � Lush green foliage adds contrast
- � Great for shaded areas and containers
- � Bloom color changes with soil pH
Design Tip: For the bluest flowers, plant in acidic soil and avoid lime-based fertilizers.
Growing Zones: 5–9 outdoors
| Mature Height: | 4–6 ft. |
| Mature Width: | 4–6 ft. |
| Sunlight: | Part Shade |
| Botanical Name: | Hydrangea macrophylla 'Nikko Blue' |
| Growth Rate: | Moderate |
| Type: | Deciduous Shrub |
| Bloom Color: | Blue (in acidic soil) |
FAQ's
How do I get blue flowers on Nikko Blue Hydrangea?
Blue blooms occur when grown in acidic soil (pH 5.2–5.5). Add aluminum sulfate or sulfur to acidify the soil.
Can Nikko Blue grow in full sun?
It prefers morning sun with afternoon shade to prevent bloom fade and leaf scorch.
Does it bloom more than once per season?
No, it blooms on old wood and usually flowers once per season in summer.
When should I prune this hydrangea?
Prune right after flowering in summer to avoid cutting off next year’s buds.
