Bigleaf Hydrangea, French Hydrangea, Mophead 'Gentian Dome'

Hydrangeamacrophylla

Family
Hydrangeaceae (hy-drain-jee-AY-see-ee)
Genus
Hydrangea (hy-DRAIN-juh)
Species
macrophylla (mak-roh-FIL-uh)
Synonym
Spacing
36-48 in. (90-120 cm)
Hardiness
6-8 ft. (1.8-2.4 m)
Sun Exposure
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Danger
Sun to Partial Shade
Bloom Color
Parts of plant are poisonous if ingested
Bloom Time
Rose/Mauve
Dark Blue
Foliage
Mid Summer
Other Details
Other details
Deciduous
Propagation Methods
Seed Collecting
By dividing the rootball
From softwood cuttings
From semi-hardwood cuttings
Soil pH requirements
Patent Information
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Foliage Color
Bloom Characteristics
Water Requirements
Where to Grow
Shrubs
Regional

This plant is said to grow outdoors in the following regions:

Mentone, Alabama

San Jose, California

Baltimore, Maryland

Lafayette, Tennessee

Martinsburg, West Virginia

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Gardener's Notes:

1
positive
2
neutrals
0
negative
Sort By:
Sort By:
L
Ithaca, NY (Zone 5b) | December 2004 | positive

According to the authors of "Encyclopedia of Hydrangeas" (2004 - Timber Press), "A shrub up to 3.5' with dark green foliage. The corymbs...Read More

M
(Zone 11) | May 2004 | neutral

When the soil is alcaline, it has strong magenta flowers. When acidic, it produces deep blue ones.

L
Grove City, OH (Zone 6a) | January 2003 | neutral

One of the deepest blues available.

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