Create a classic summer display with bright milky-blue mophead flowers in acidic soil. Nikko Blue Hydrangea forms a bold, rounded shrub with large medium-green leaves. Flower color shifts from blue in acidic soil to pink in alkaline conditions, and the blooms attract butterflies.Growing Guide Sun Exposure: Part Sun USDA Hardiness Zones: 5 - 9 Mature Height: 4'–6' Mature Width: 4'–6' Spacing: 5' Soil: Rich, moist, well-drained soil Water Needs: Moderate Growth Rate: Moderate Plant Details Botanical Name: Hydrangea macrophylla 'Nikko Blue' Common Name: Nikko Blue Hydrangea Plant Type: Deciduous Flowering Shrub Bloom Color: Blue (acidic), Pink (alkaline) Season of Interest: Summer Foliage: Deciduous Growth Habit: Bold and Rounded Pollinator Friendly: Yes Key Features Bright milky-blue mophead flowers Pink blooms in alkaline soil Large bold foliage Attracts butterflies Classic foundation hydrangea Landscape Uses Foundation plantings Mixed borders Mass plantings Cut flower gardens Woodland edges Planting & Care Tips Plant in part sun. Provide rich, moist, well-drained soil. Water regularly during establishment. Prune immediately after flowering because blooms form on old wood. Companion Plants Hydrangea Penny Mac Aucuba Picturata Carex Evergold Hosta Blue Angel Liriope Big Blue Please Note: Our photos represent the variety you will receive. Because plants are living products, size and fullness may vary naturally with the season and stage of growth, while remaining true to the variety shown.