Woody > Quercus > Quercus glauca > Quercus glauca
Quercus glauca
Ara-kasi (Japanese), Blue Japanese Oak
Origin: Himalaya to Japan.
| Family |
| Fagaceae |
| Genus |
| Quercus |
| Species |
| glauca |
| Category |
| Woody |
| Type |
| Tree (evergreen), Shrub (evergreen) |
| USDA Hardiness Zone |
| 7 - 8 |
| Canadian Hardiness Zone |
| 6b -8a |
| RHS Hardiness Zone |
| H5 - H4 |
| Temperature (°C) |
| (-15) - (-7) |
| Temperature (°F) |
| 5 - 20 |
| Height |
| 10-20 m |
Photographs
Cultivars
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Description and Growing Information
Flowering Period
| General Description |
| This species has been placed on the IUCN Red List as least concern. |
| Growth |
| Slow |
| Habitat |
| Forests at an altitude of 100-2,600 m. |
| Bark/Stem Description |
| Smooth, blackish brown becoming furrowed and rough with age. Glabrescent, thick dark olive green twigs. |
| Flower/Leaf Bud Description |
| Ovoid, reddish-brown, clustered in 5-7, 3-8 mm. |
| Leaf Description |
| Oboval to oblong-elliptic, thick, glossy dark green with a blueish-green, pubescent underside, a rounded or cuneate base and 9-13 slightly curved veins on either side of the midvein, 6-13 x 2.5-5 cm. |
| Flower Description |
| Drooping male catkins. |
| Fruit Description |
| Acorn, ovoid, oblong-ovoid or ellipsoid, 1-1.6 x 0.9-1.4 cm. |
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