Oriental White Oak represents a species oak used for its edible acorns as well as flooring, boat building, and other uses where water resistant wood is required. The oak sometimes goes by the name Galcham oak in its native Korea. The acorns are used for coffee once roasted and as a kind of cereal substitute. The acorns are usually free of weevils and drop free of the cap.
No one has really looked at the species in terms of its use here in the U.S. and it was pretty much considered a botanical curiosity. When I had planted this oak, my goal was to use the acorns for acorn meal. The wood has broad rays and striations with large rings. It is quite vigorous even in the dry area I have it. The trees are easy to establish and have large broad dark green leaves.
Since my first plantings I have pruned the trees to an open crown. This has reduced the crown volume but created a more productive tree. The tree is easy to establish and fruited when they reached eight foot tall. The acorns are produced on the whorls of branches at the end of the branches. It is not the most prolific acorn producer of all the species I have but it is consistent almost always having a crop. It appears to not hybridize from what I have seen of the progeny when I grew them at my farm.
To germinate the acorns: Fall plant or store in cold and moisture for 90 days at 38F to 42F under refrigeration. Use lightly damp Canadian peat moss as an additive. The acorns rarely rot and do not sprout right away.
Plant Specs |
Genus & Species |
Quercus aliena |
Seed Source |
Michigan, Grown from a Korean seed source selected in a forest type environment in South Korea. Very hardy here taking minus 25F once with no winter damage. |
Hardiness |
-25F or more |
Height (ft) |
80 ft. plus in the wild. Seems to be more broad than high at my farm. 40-60 cultivated possibly. A few trees have strong upright tendencies and some are like standard apple trees. |
Pollination Requirements |
Self fertile. Trees flower early and appear not to cross with other nearby white oaks. Two of the same plant might be beneficial for acorn production. |
Soil |
Has established well at my farm in very sandy soil and fruits well on the hillsides they are on. Probably able to grow in a variety of soil types. |
Climate |
Similar in some ways to Mongolian oak-likes cold climates zone 4-8. Leaves are always dark green and clean. |
Ease of Cultivation |
Super easy to establish. Although tap rooted, trees transplant well and grow quickly once established. Trees are very drought tolerant and much quicker to establish than white oak is. The broad glossy leaves are distinct and this makes a wonderful tree with wide spreading branches. Certainly worth growing into a part of an oak woodland type scenario for its edible acorns. Self pruning to some extent and lower limbs naturally self prune forcing the tree upwards. |