Photo by Melody

PlantFiles: Japanese Blue Oak, Ring Cupped Oak
Quercus glauca

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Family: Fagaceae (fag-AY-see-ee) (Info)
Genus: Quercus (KWER-kus) (Info)
Species: glauca (GLAW-kuh) (Info)

Synonym:Quercus myrsinifolia
Synonym:Cyclobalanopsis glauca
Synonym:Cyclobalanopsis myrsinifolia

2 members have or want this plant for trade.

Category:
Trees

Height:
20-30 ft. (6-9 m)

Spacing:
10-12 ft. (3-3.6 m)
12-15 ft. (3.6-4.7 m)

Hardiness:
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)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)
USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Full Sun
Sun to Partial Shade

Danger:
Parts of plant are poisonous if ingested

Bloom Color:
Inconspicuous/none

Bloom Time:
Mid Spring

Foliage:
Evergreen
Shiny/Glossy-Textured

Other details:
Average Water Needs; Water regularly; do not overwater
Provides winter interest

Soil pH requirements:
Unknown - Tell us

Patent Information:
Non-patented

Propagation Methods:
From seed; direct sow outdoors in fall

Seed Collecting:
Unknown - Tell us

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There are a total of 12 photos.
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Profile:

2 positives
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive donnacreation On Mar 11, 2010, donnacreation from Sumter, SC (Zone 8a) wrote:

There is a beautiful Japanese blue oak growing in Brookgreen Gardens, located between Mrytle Beach and Georgetown, SC. I'm surprised they're a rarity here. I've seen any marketed locally. What a shame.

Positive jtk On Dec 10, 2004, jtk from Issaquah, WA (Zone 8a) wrote:

With water and fertilizer it grows moderate to fast. Attractive bronze spring leaves that the deer love to eat.



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