Family: Hydrangeaceae (hy-drain-jee-AY-see-ee) (Info)
Genus: Hydrangea (hy-DRAIN-juh) (Info)
Species: macrophylla (mak-roh-FIL-uh) (Info)
Cultivar: Shamrock
Additional cultivar information: (PP16223)
Hybridized by Mallet; Year of Registration or Introduction: 2004
» View all varieties of Hydrangeas  One vendor has this plant for sale.
Height:
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)
Spacing:
4-6 ft. (1.2-1.8 m)
Hardiness:
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)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Sun Exposure:
Sun to Partial Shade
Danger:
Parts of plant are poisonous if ingested
Bloom Color:
Pink
Red
Bloom Time:
Mid Summer
Foliage:
Deciduous
Other details:
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater
Flowers are good for cutting
Flowers are good for drying and preserving
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
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