Photo by Melody

PlantFiles: Japanese Emperor Oak
Quercus dentata

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Family: Fagaceae (fag-AY-see-ee) (Info)
Genus: Quercus (KWER-kus) (Info)
Species: dentata (den-TAY-tuh) (Info)

Synonym:Quercus daimo

3 vendors have this plant for sale.

2 members have or want this plant for trade.

Category:
Trees

Height:
over 40 ft. (12 m)

Spacing:
20-30 ft. (6-9 m)
30-40 ft. (9-12 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)

Sun Exposure:
Full Sun
Sun to Partial Shade

Danger:
Pollen may cause allergic reaction

Bloom Color:
Cream/Tan
Inconspicuous/none

Bloom Time:
Late Spring/Early Summer

Foliage:
Grown for foliage
Deciduous

Other details:
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:
Non-patented

Propagation Methods:
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
By grafting

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds
Seed does not store well; sow as soon as possible

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By Kelli
Thumbnail #1 of Quercus dentata by Kelli

By ViburnumValley
Thumbnail #2 of Quercus dentata by ViburnumValley

By ViburnumValley
Thumbnail #3 of Quercus dentata by ViburnumValley

By ViburnumValley
Thumbnail #4 of Quercus dentata by ViburnumValley

By ViburnumValley
Thumbnail #5 of Quercus dentata by ViburnumValley

By ViburnumValley
Thumbnail #6 of Quercus dentata by ViburnumValley

By ViburnumValley
Thumbnail #7 of Quercus dentata by ViburnumValley

There are a total of 16 photos.
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Profile:

1 positive
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive ViburnumValley On Jan 1, 2007, ViburnumValley from Scott County, KY (Zone 5b) wrote:

The Japanese Emperor oak is a fine slower growing large leaved oak for the home landscape. It will remind one of the bur oak, with its rough bark and obovate leaves. The fall color can range amongst reds, oranges, yellows, and purples.

One will never confuse it with any other oak once one sees the acorns and the unique caps. The acorns are rather petite, but the package they come in is unforgettable. The frilly lustrous burnished copper colored caps are unmatched in all the oaks I have experience growing in the eastern US.

This tree has marcescent foliage, so it can serve a functional use to aid winter screening. There are seven fine individuals growing in the lawn of the Kirwan-Blanding residential community on the University of KY campus.

Regional...

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

Arcadia, California
Olathe, Kansas (2 reports)
Overland Park, Kansas
Clermont, Kentucky
Georgetown, Kentucky
Louisville, Kentucky
Lincoln, Nebraska
New Ipswich, New Hampshire
King Ferry, New York
Christiana, Tennessee



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