Bigleaf Hydrangea, French Hydrangea, Mophead 'Pia'

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: Pia
Additional cultivar information:(aka Winning Edge, Pink Elf)
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12-18 in. (30-45 cm)

18-24 in. (45-60 cm)


15-18 in. (38-45 cm)


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:

Magenta (pink-purple)


Bloom Time:

Mid Summer

Late Summer/Early Fall



Other details:

Unknown - Tell us

Soil pH requirements:

5.1 to 5.5 (strongly acidic)

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

Patent Information:

Unknown - Tell us

Propagation Methods:

By dividing the rootball

From softwood cuttings

From semi-hardwood 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:

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Requires consistently moist soil; do not let dry out between waterings

Where to Grow:

Unknown - Tell us


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

Mentone, Alabama

Fairfield, Connecticut

Trumbull, Connecticut

Gainesville, Georgia

Louisville, Kentucky

Dracut, Massachusetts

Southold, New York

Chapel Hill, North Carolina

Gresham, Oregon

Philadelphia, Pennsylvania

Memphis, Tennessee

Rockwood, Tennessee

Houston, Texas

Vancouver, Washington

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Gardeners' Notes:


On Apr 12, 2009, hcsurprise from Memphis, TN wrote:

Bought this hydrangea two years ago and put it in a pot on my deck (part shade) using regular potting soil. It was covered with beautiful blooms last year which lasted for several weeks. Now new buds are forming for this year.


On Dec 2, 2004, lmelling from Ithaca, NY (Zone 5b) wrote:

Information from both "Hydrangeas for American Gardens," by Michael A. Dirr (2004) and "Encyclopedia of Hydrangeas" C.J. and D.M. Van Gelderen (2004 - Timber Press).

Possibly the smallest mophead cultivar. It grows quite slowly. Flowerheads are equally small, sepals pointed and tightly set, sometimes different sizes. The color is usually red with a white eye but can be blue to blue-violet in acid soil.

Minimal cold hardiness; often devastated by spring frosts. Leaf spot susceptible, one author notes that it may revert to tall - growing type.

AKA: 'Piamina', 'Comet', 'Winning Edge', 'Pink Elf (TM)'


On Jan 21, 2003, lupinelover from Grove City, OH (Zone 6a) wrote:

'Pia' is a dwarf; it would be very suitable in a pocket garden or in a container.