Ashworth Bur Oak - Most acorns can only be eaten by humans after extensive soaking in water to remove their bitterness. This variety can be eaten raw without leaching. Ashworh bur oak is a hardy selection from upstate New York selected by Fred Ashworth.
Bur Oak - This species has the largest leaves and acorns of any oak. The nuts have been used as human food. Widely adapted. Good red fall color. Zone 3-9.
Oregon White Oak - Tough, drought tolerant, northwest native, dark green leathery leaves, gray bark. Oregon White Oak is a big majestic spreading shade tree. Zone 6-9.