Bigleaf Hydrangea, French Hydrangea, Mophead
Hydrangeamacrophylla 'Hopcorn'

Family: Hydrangeaceae (hy-drain-jee-AY-see-ee)
Genus: Hydrangea (hy-DRAIN-juh)
Species: macrophylla (mak-roh-FIL-uh)
Cultivar: Hopcorn

Height

24-36 in. (60-90 cm)
36-48 in. (90-120 cm)

Spacing

36-48 in. (90-120 cm)

Hardiness

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)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)

Sun Exposure

Sun to Partial Shade

Danger

Parts of plant are poisonous if ingested

Bloom Color

Pink
Medium Blue

Bloom Time

Mid Summer
Late Summer/Early Fall
Mid Fall

Foliage

Deciduous
Provides Winter Interest

Other details

Unknown

Propagation Methods

From softwood cuttings
From semi-hardwood cuttings
By simple layering

Seed Collecting

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

Soil pH requirements

4.6 to 5.0 (highly acidic)
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information

Patented

Foliage Color

Unknown

Bloom Characteristics

Flowers are good for cutting
Flowers are good for drying and preserving
This plant is attractive to bees, butterflies and/or birds

Water Requirements

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

Where to Grow

Can be grown as an annual