Common Names : Ring-cup oak , ring-cupped oak
This is an evergreen oak that is native to Japan, China, Korea, Taiwan and the Himalayas.
It is an upright-oval to rounded tree that tends to form multiple trunks and typically grows in cultivation to 20-30' tall. In its native habitat, it may mature over time to as much as 30-50' tall, but is also often seen growing as a large shrub.
Leathery, oblong to elliptic leaves (to 5 1/2" long) are a glossy dark green above and glaucous gray-green below. New foliage is rich green to bronze or purple green .
Fruits are acorns (to 3/4" long) with cups that extend to approximately 1/3 of the acorn length. Each cup has 5-6 concentric rings. Acorns appear singly or in clusters of 2 or 3.
Zone: 7 to 9
Height: 20.00 to 30.00 feet
Spread: 10.00 to 15.00 feet