The Nikko Blue Hydrangea (Hydrangea macrophylla 'Nikko Blue') is a classic garden favorite, celebrated for its large, rounded clusters of vibrant blue flowers and lush green foliage. A member of the bigleaf hydrangea family, it produces its stunning blooms on old wood, typically from late spring through summer. The vivid blue color, which gives the plant its name, is most intense in acidic soils—while more alkaline soils may cause the flowers to shift toward pink or purple hues. With its bold color and elegant form, Nikko Blue is often used in foundation plantings, shade gardens, or as a striking accent in mixed borders.
This hydrangea thrives in part shade to full morning sun with moist, well-drained soil, and it performs best in USDA Zones 5–9. While it can handle warmer climates, protection from the hot afternoon sun helps prevent leaf scorch. Regular watering is essential during dry spells, and applying mulch helps retain moisture and keep the roots cool. With proper care, Nikko Blue Hydrangea delivers reliable, show-stopping color year after year, making it a cherished addition to gardens across a wide range of climates.
At Moon Valley Nurseries, we offer free design consultation at all of our nursery locations with our expert designer team to make your landscaping goals a reality!
