Clethra Species, Japanese Clethra

Clethrabarbinervis

Genus
Clethra (KLEE-thra)
Species
barbinervis (bar-BIN-ner-viss)
Synonym
Clethra barbinervis var. kawadana
Clethra japonica
Clethra kawadana
Clethra stolonifera
Clethra wuyishanica
Sun Exposure
Light Shade
Foliage
Deciduous
Smooth
Height
12-15 ft. (3.6-4.7 m)
Spacing
8-10 ft. (2.4-3 m)
Hardiness
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)
Danger
N/A
Bloom Color
White/Near White
Bloom Time
Mid Summer
Other Details
Category
Shrubs
Water Requirements
Requires consistently moist soil; do not let dry out between waterings
Foliage Color
Bronze
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
Bloom Size
Other details
Soil pH requirements
6.1 to 6.5 (mildly acidic)
Patent Information
Non-patented
Propagation Methods
From softwood cuttings
Seed Collecting
Regional

This plant is said to grow outdoors in the following regions:

Lenox, Massachusetts

Horton, Michigan

Lansing, Michigan

Coatesville, Pennsylvania

Wilkes Barre, Pennsylvania

Lexington, Virginia

Seattle, Washington

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Featured Videos

Gardener's Notes:

1
positive
2
neutrals
0
negative
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D
West Plains, MO | April 2010 | neutral

I had nice specimens both in the deep Missouri Ozarks and in Kansas City. Both were killed stone dead by the extended hard freeze of Apri...Read More

S
Coatesville, PA | January 2008 | positive

I have an 8-9' specimen in front (north side) of my house. It produces lovely drooping white flowers in mid-summer that are very fragrant...Read More

B
Lakemont, GA (Zone 8a) | January 2006 | neutral

From the Southern Living Gardening book: Slow-growing plant reaches 15-18 ft. tall and about one-half to one-thirds as wide. Has attracti...Read More

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