Bigleaf Hydrangea, French Hydrangea, Mophead 'Merritt's Supreme'

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
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
Red
Foliage
Late Spring/Early Summer
Mid Summer
Other Details
Other details
Deciduous
Propagation Methods
Seed Collecting
Soil pH requirements
Patent Information
Foliage Color
Bloom Characteristics
Water Requirements
Where to Grow
Shrubs
Regional

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

Duarte, California

San Leandro, California

Tallahassee, Florida

Bethlehem, Georgia

Marietta, Georgia

Merryville, Louisiana

Constantine, Michigan

Decatur, Mississippi

Brevard, North Carolina

South Jordan, Utah

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Gardener's Notes:

2
positives
1
neutral
0
negative
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S
Penn Hills, PA | June 2015 | neutral

Not very hardy. Only grow 24-36" in zone 6.

Their main strength is ability to produce blooms that never shift to blue.

P
P
Moncks Corner, SC (Zone 8b) | June 2006 | positive

I kept mine fairly moist at all times, and it gave me gorgeous blooms. I got 5 off the plant this year, each being about 6 inches or so a...Read More

L
Ithaca, NY (Zone 5b) | December 2004 | positive

Compact, usually not exceeding 5'. Thick, sturdy branches. Flowerheads have 5 or 6 sepals making flowers look double, serrate; flower h...Read More

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