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The Blackjack Oak is one of the smaller Oaks, rarely reaching 60 feet, most commonly 25 to 40 feet, with a trunk diameter of 2 feet. The bark is reddish brown, usually nearly black, and has furrow and broken ridges. The leaves are thick and broad, dark green above, and paler beneath. They are 4-6 inches long and wedge-shaped with three bristle-tipped lobes at the wide tip. The acorn is globular, with a top-shaped cup covering half the nut that is about 3/4 inch long. The Blackjack Oak grows in New York to Florida and west to Oklahoma. It thrives in barren, sandy, or clay soils.
Information about this plant from the USDA Plants Database.
Information from the TreeGuide from Athenic Systems.
This page was last updated 12 Jun 2003.