Quercus dentata - Japanese Emperor OakDescription Specification Gift wrap Quercus dentata (Japanese Emperor Oak) is a rarely offered, majestic tree, growing up to 25m with a trunk diameter of up to 1m. Its main value is the large, beautifully shaped, leathery, downy leaves. Quercus dentata foliage is remarkable just from the size alone; its leaves are the largest in the oak species. You will see our specimens are now paper bag brown and persist all winter. The new growth in the Spring