Nikko Blue Bigleaf Hydrangea Bare Root Hydrangea Bush
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About Nikko Blue Bigleaf Hydrangea Bare Root Hydrangea Bush
Hydrangea macrophylla ‘Nikko Blue’
Type: Bigleaf Mophead Hydrangea | Origin: Japanese hydrangea selection | Hardiness: USDA Zones 6–9
💙 Big, beautiful blue flowers and lush green foliage—Nikko Blue is the classic hydrangea that has been charming gardeners for generations.
Nikko Blue produces spectacular rounded clusters of blue flowers against large, glossy green leaves. In acidic soils, the blooms develop their signature blue coloring, while more alkaline conditions can produce lavender or pink flowers.
🌸 Flower & Garden Details
Flower Color: Blue in acidic soils; lavender to pink in alkaline soils
Flower Form: Large, rounded mophead clusters
Bloom Season: Early to midsummer
Foliage: Large, glossy green leaves
Habit: Rounded, bushy shrub
Mature Size: Approximately 4–6 feet tall and wide
Light: Morning sun with afternoon shade
Hardiness: USDA Zones 6–9
Bloom Wood: Primarily old wood
Cut Flower: Excellent fresh or dried
Best Uses: Cottage gardens, shaded borders, foundation plantings and cutting gardens
💙 The Secret Behind Those Blue Flowers
Nikko Blue is a classic Japanese bigleaf hydrangea selection, treasured for its generous mophead blooms and rich coloring.
Unlike white panicle hydrangeas, its flower color can change with soil chemistry. Acidic soil with available aluminum encourages blue flowers, while alkaline soil typically produces pink blooms. This makes Nikko Blue especially fascinating for gardeners who love experimenting with flower color.
💛 Why Grace Rose Farm Loves It
There's something wonderfully nostalgic about a big blue hydrangea.
We love Nikko Blue for its lush, romantic flowers and the beautiful contrast it creates alongside pink, cream and apricot roses. Its large blooms are gorgeous in summer bouquets, and mature flowers can be dried for arrangements that last well beyond the growing season.
🌿 Planting & Care
Plant your bare root hydrangea in rich, well-drained soil with consistent moisture, preferably where it receives morning sunlight and protection from hot afternoon sun.
Nikko Blue blooms primarily on old wood, so avoid pruning in fall or early spring. If shaping is necessary, prune immediately after flowering. In colder climates, protect the stems and flower buds from winter damage, as the shrub may survive winter but fail to bloom if its buds are killed.
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Bare Root Rose Season is Here!
Reserve the most beautiful, healthiest Better Bare Root™ roses for your garden. Shipping January through April, perfectly timed to your climate, each rose arrives ready to thrive. Discover the largest online selection of bare root roses, grown by America’s finest rose grower using sustainable farming practices and time-honored artistry—so every plant begins its journey with strength, beauty, and promise.
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WHAT MAKES A ROSE A BETTER BARE ROOT™?
Our bare root roses are carefully selected and prepared to give you the best start for your garden. Each rose is inspected for quality and health before shipping.
Whether you choose own root or budded roses, you'll receive premium plants that are ready to thrive in your garden.
Grow With Gracie™ Guides
Understanding the Difference Between Budded and Own-Root Roses
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How to Receive and Plant Your Better Bare Root™ Roses
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One-Year Grow With Grace™ Guarantee
At Grace Rose Farm®, we’re all about growing gorgeous gardens and happy hearts. That’s why we’ve got your back with our One-Year Grow With Grace™ Guarantee—because we know sometimes things just don’t go as planned in the garden. If your plant doesn’t make it within the first year, no worries—we’ll help make it right with a little store credit love 💗.