Photo by Melody

PlantFiles: Japanese Cedar
Cryptomeria japonica 'Knaptonensis'

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Family: Cupressaceae (koo-press-AY-see-ee) (Info)
Genus: Cryptomeria (krip-toh-MER-ee-uh) (Info)
Species: japonica (juh-PON-ih-kuh) (Info)
Cultivar: Knaptonensis

2 vendors have this plant for sale.

4 members have or want this plant for trade.

Category:
Shrubs
Trees

Height:
24-36 in. (60-90 cm)

Spacing:
24-36 in. (60-90 cm)

Hardiness:
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:
Full Sun
Sun to Partial Shade

Danger:
Handling plant may cause skin irritation or allergic reaction
Pollen may cause allergic reaction

Bloom Color:
Inconspicuous/none

Bloom Time:
N/A

Foliage:
Grown for foliage
Evergreen
Silver/Gray
Blue-Green
Aromatic

Other details:
Drought-tolerant; suitable for xeriscaping

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:
Unknown - Tell us

Propagation Methods:
By air layering
By tip layering

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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to view:

By victorgardener
Thumbnail #1 of Cryptomeria japonica by victorgardener

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Thumbnail #2 of Cryptomeria japonica by victorgardener

By HydroPinke
Thumbnail #3 of Cryptomeria japonica by HydroPinke

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Thumbnail #4 of Cryptomeria japonica by HydroPinke

By HydroPinke
Thumbnail #5 of Cryptomeria japonica by HydroPinke

Profile:

1 positive
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorContent
Neutral jaguarlady53 On Apr 12, 2014, jaguarlady53 from Natchez, MS wrote:

I have 3 of these shrubs. I bought them for small shrubs to 2'. Mine have grown taller than that. I am 5'2 and look way up to them. The tallest has to be 7'. I think they were planted 4 to 5 years ago. I don't want to trim them but may have to do so.

Positive alstuff On Jun 1, 2005, alstuff from Washington, DC wrote:

This plant is hardy. I have it in medium shade and have moved it once with no ill effects.

Regional...

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

Washington D.c.,
Natchez, Mississippi
Laflin, Pennsylvania
Five Corners, Washington



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