Photo by Melody

PlantFiles: Silver Leaf Hydrangea
Hydrangea arborescens subsp. radiata 'Samantha'

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Family: Hydrangeaceae (hy-drain-jee-AY-see-ee) (Info)
Genus: Hydrangea (hy-DRAIN-juh) (Info)
Species: arborescens subsp. radiata
Cultivar: Samantha

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Height:
36-48 in. (90-120 cm)

Spacing:
Unknown - Tell us

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)

Sun Exposure:
Sun to Partial Shade

Danger:
Parts of plant are poisonous if ingested

Bloom Color:
White/Near White

Bloom Time:
Late Spring/Early Summer

Foliage:
Deciduous

Other details:
Average Water Needs; Water regularly; do not overwater
Requires consistently moist soil; do not let dry out between waterings

Soil pH requirements:
6.1 to 6.5 (mildly acidic)

Patent Information:
Non-patented

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

Profile:

1 positive
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive lmelling On Dec 9, 2004, lmelling from Ithaca, NY (Zone 5b) wrote:

In "Hydrangeas for American Gardens," by Michael A. Dirr (2004), it says:

Subspecies radiata 'Samantha' is a sterile-flowered form with the flowerhead shape somewhere in between 'Annabelle' and 'Grandiflora'. Flowerheads are 4" to 6" in diameter, emerge green, mature white, fading to green and finally parchment. Sepals in (3s) 4s(5s), 1 to 1-1/2 inches across, and each sepal broad-ovate to rounded, entire, slightly overlapping, and 3/8" to 5/8" wide and 1/2" to 3/4" long. Leaves are silver-whitish backed.

This subspecies requires cooler day/night temperatures than are available in zone 7 and 8, so are better for more northern gardens.

Regional...

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

Cornwall Bridge, Connecticut



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