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Bigleaf Hydrangea, French Hydrangea, Mophead 'White Out'

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: White Out
Additional cultivar information:(Forever & Ever Series)
Registered or introduced: 2009
» View all varieties of Hydrangeas


24-36 in. (60-90 cm)


24-36 in. (60-90 cm)


USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

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)

Sun Exposure:

Light Shade


Parts of plant are poisonous if ingested

Bloom Color:

White/Near White

Bloom Time:

Late Spring/Early Summer

Mid Summer

Blooms repeatedly



Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

From softwood cuttings

Seed Collecting:

N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


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

Raleigh, North Carolina

Verona, Pennsylvania

Gardeners' Notes:


On Jun 3, 2015, SpringwoodGrdns from Penn Hills, PA wrote:

The cultivar name of this is White Ball or possibly even Schneeball in Europe.

Excellent potted plant. However, I don't recommend it be used in-ground in areas with harsh winters, as it is a dwarf plant and takes a while to achieve any noticeable size. My two are in large pots (overwintered in a garage) for several years and have not exceeded 18-24" in height. Due to their compact structure, they do crank out a lot of little blooms, ranging from 2-6". But fair warning, the blooms are highly susceptible to sun scorch, and the leaves are susceptible to some powdery mildew and other minor diseases.