Bigleaf Hydrangea, Mophead Hydrangea 'Red Star'

Hydrangeamacrophylla

Family
Hydrangeaceae (hy-drain-jee-AY-see-ee)
Genus
Hydrangea (hy-DRAIN-juh)
Species
macrophylla (mak-roh-FIL-uh)
Synonym
Spacing
36-48 in. (90-120 cm)
Hardiness
4-6 ft. (1.2-1.8 m)
Sun Exposure
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)
Danger
Sun to Partial Shade
Bloom Color
Parts of plant are poisonous if ingested
Bloom Time
Red
Scarlet (dark red)
Foliage
Mid Summer
Late Summer/Early Fall
Mid Fall
Other Details
Other details
Deciduous
Propagation Methods
Seed Collecting
By dividing the rootball
From softwood cuttings
From semi-hardwood cuttings
Soil pH requirements
Patent Information
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Foliage Color
Bloom Characteristics
Water Requirements
Where to Grow
Shrubs
Regional

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Gardener's Notes:

0
positive
0
neutral
0
negative
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Dog Day Cicada
(Tibicen canicularis)
Hooded Merganser
(Lophodytes cucullatus)