Nantucket Blue™ Hydrangea
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Nantucket Blue™ Hydrangea

Nantucket Blue™ Hydrangea

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Hydrangea Macrophylla 'Grenan'


The Nantucket Blue™ Hydrangea is a repeat blooming selection of hydrangea that adorns houses on the island of Nantucket. Unlike most hydrangeas, this unique beauty blooms repeatedly on new growth throughout the growing season; may bloom from early summer well into early fall. Dense leathery green foliage provides contrast for an abundant summertime display of blue or pink flower clusters that last until frost. Blooms on both old and new wood, near and far from the coast. Nantucket Blue™ grows best in afternoon shade or in dapple sunlight beneath large trees. Planting on the east or north a side of a home also works well. Use this plant as an accent plant, in mass plantings, or near water gardens or ponds.

Hardiness Map
Mature Height: 5'
Mature Width: 5'
Flower Season: Summer
Sun: Full Shade
Hardiness Zone: 4 to 9
This plant is suitable for the low temperates below:
Temp (F)
Temp (C)
-30 to -20
-34.4 to -28.9
-20 to -10
-28.9 to -23.3
-10 to 0
-23.3 to -17.8
0 to 10
-17.8 to -12.2
10 to 20
-12.2 to -6.7
20 to 30
-6.7 to -1.1

Shade hydrangeas prefer moist soil and regular watering during the growing season. For most, in order to obtain the blue flower color, apply 2 tablespoons of aluminum sulfate near the base of the plant. A rusty nail or coffee grounds will also increase the acidity of the soil which makes the flowers turn blue.