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Bigleaf Hydrangea, French Hydrangea, Mophead 'Soeur Therese'

Hydrangea macrophylla

Family: Hydrangeaceae (hy-drain-jee-AY-see-ee) (Info)
Genus: Hydrangea (hy-DRAIN-juh) (Info)
Species: macrophylla (mak-roh-FIL-uh) (Info)
Cultivar: Soeur Therese
Additional cultivar information:(aka Sister Theresa, Soeur Thrse)
» View all varieties of Hydrangeas


36-48 in. (90-120 cm)


8-10 ft. (2.4-3 m)


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)

Sun Exposure:

Sun to Partial Shade


Parts of plant are poisonous if ingested

Bloom Color:

White/Near White

Bloom Time:

Late Spring/Early Summer

Mid Summer

Late Summer/Early Fall



Other details:

Unknown - Tell us

Soil pH requirements:

Unknown - Tell us

Patent Information:

Unknown - Tell us

Propagation Methods:

Unknown - Tell us

Seed Collecting:

Unknown - Tell us

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Unknown - Tell us

Where to Grow:

Unknown - Tell us


This plant has been said to grow in the following regions:

Grand Bay, Alabama

Marrero, Louisiana

Dracut, Massachusetts

Nacogdoches, Texas

Buckley, Washington

Gardeners' Notes:


On Dec 3, 2004, lmelling from Ithaca, NY (Zone 5b) wrote:

From the sources "Hydrangeas for American Gardens," by Michael A. Dirr (2004), and "Encyclopedia of Hydrangeas" C.J. and D.M. Van Gelderen (2004 - Timber Press):

These two sources disagree on the height of this shrub, one calling it 3.5' - 5' and the other saying 4'-6'. They do agree that the flowerheads are large and pure white. Sepals are sharply serrate. Single florets have a small blue eye. The plant needs some shade for good results. The flowers become green tinted with red when ready to dry and are delicate. This is not a cold hardy plant but no zone reference was given.

AKA: 'Petite Soeur Therese de l'Enfant Jesus'.