
Hydrangea macrophylla 'Nikko Blue'
Bigleaf hydrangea (Hydrangea macrophylla 'Nikko Blue') is a deciduous shrub known for its showy, blooming clusters. It features large green leaves and deep blue, cone-shaped clusters with mop-like heads of small florets. The flower colors vary from pale blue to deep blue depending on soil pH levels, ranging from pink to purple and to almost white in more alkaline soil. In the summer, it bears rich cloud-like flowers on long, strong stems in pristine shade hues. Growing 4-5 feet tall and 3-5 feet wide, this hydrangea is best planted in partial sun to light shade, with some protection from hot afternoon sunlight. This versatile shrub is a great addition to any garden, adding ornamental value with its unique foliage and flowers.
Sunlight
Partial Shade
Water Needs
medium
Green areas show climates worldwide where this plant can grow.
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Water Every
"7-10" days
Sun Needs
partial-shade
Growth
High
Care Level
Moderate
💧 Water every "7-10" days
Seasonal Adjustments
Adjust watering frequency based on temperature, humidity, and season. Water more frequently in summer and less in winter.
Pro Tip: Check soil moisture before watering. Stick your finger 1-2 inches into the soil—if it's dry, it's time to water!
Start seeds indoors 6-8 weeks before last frost date
Take 4-6" cuttings in spring, root in water or moist soil
Take 4-6" cuttings in spring, root in water or moist soil
Propagate via Stem Propagation for best results
Take 4-6" cuttings in spring, root in water or moist soil
Good For:
Consider Carefully:
Enjoys dappled or limited direct sun—about 2–4 hours of morning or late afternoon light and protection during peak midday sun.
Keep soil consistently moist but not waterlogged. Water when top inch of soil is dry.
Plant in early spring or fall for best results. Blooms in summer.