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Bigleaf Hydrangea, French Hydrangea 'Pistachio'

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: Pistachio
Additional cultivar information:(PPAF; aka Horwack)
» View all varieties of Hydrangeas


36-48 in. (90-120 cm)


36-48 in. (90-120 cm)


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:


Pale Green

Bloom Time:

Late Summer/Early Fall



Other details:

Unknown - Tell us

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:

Patent applied for/pending

Propagation Methods:

By dividing the rootball

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:

Flowers are good for cutting

Flowers are good for drying and preserving

Water Requirements:

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

Where to Grow:

Unknown - Tell us


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

Lemoore, California

Buford, Georgia

Deridder, Louisiana

Winnsboro, Texas

Quilcene, Washington

Seattle, Washington

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Gardeners' Notes:


On Aug 8, 2016, NWSeattleite from Seattle,
United States (Zone 8b) wrote:

This hydrangea sent me on a real rollercoaster of love and hate. When I first read about it I wanted it so bad, and when I finally found one I snatched it up immediately. The pictures of the flowers just looked so cool I couldn't wait to see it in action. So of course I got two years of almost solid green flowers with just a little pink and absolutely no blue. I was not happy. I had decided this summer was its last shot or it was getting the axe, and boy did it deliver! The flowers were everything I hoped for and more!

Long story short: It's a fantastic, unique hydrangea that stands out in any garden, but it won't deliver until it spends a few yeas getting established, so BE PATIENT!