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Smooth Hydrangea 'Frosty'

Hydrangea arborescens subsp. discolor

Family: Hydrangeaceae (hy-drain-jee-AY-see-ee) (Info)
Genus: Hydrangea (hy-DRAIN-juh) (Info)
Species: arborescens subsp. discolor
Cultivar: Frosty
» View all varieties of Hydrangeas


36-48 in. (90-120 cm)


36-48 in. (90-120 cm)


USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

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)

Sun Exposure:

Sun to Partial Shade

Light Shade


Unknown - Tell us

Bloom Color:

Pale Green

White/Near White


Bloom Time:

Late Spring/Early Summer

Mid Summer


Unknown - Tell us

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)

7.6 to 7.8 (mildly alkaline)

7.9 to 8.5 (alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

Unknown - Tell us

Seed Collecting:

Unknown - Tell us

Foliage Color:


Bloom Characteristics:

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

Gardeners' Notes:


On Dec 10, 2004, lmelling from Ithaca, NY (Zone 5b) wrote:

Subspecies discolor 'Frosty' is described as a dwarf shrub, usually 3 to 4 feet high. It is a sterile-flowered type with single sepals forming the mophead-type inflorescence. It has shiny, blue-green foliage with abundant white flowers in rather flat sterile clusters during summer. Needs Sun to part shade.

Clarence Towe discovered the plant near Clayton, Rabun County, GA.

Information from "Hydrangeas for American Gardens," by Michael A. Dirr (2004)