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Post Oak (Quercus stellata)

Post Oak Branch Post Oak, a small to medium sized tree, is mostly found along forest edges at the Arboretum. The heavy wood is resistant to decay and has a variety of uses such as railroad ties, mine timbers, and fence posts. Post Oak ranges from southern New England south to Florida and west to Kansas, Oklahoma, and Texas. It is tolerant of drought and is found on dry, sandy to rocky sites but also occurs on moister floodplains. In Texas and Oklahoma, Post Oak and Blackjack Oak are major components of the Cross Timbers - a dense forest of small trees forming the transition zone from forest to prairie grassland.

Post Oak Summer Leaf Post Oak Fall Leaf Its distinctive leathery leaves typically have five lobes, with the terminal three squarish lobes resembling a cross. The upper leaf surface is dark, shiny green in summer, while the lower surface is paler and covered with stellate (star-shaped) hairs. In the fall, leaves turn to a golden or bronze color.

Post Oak Bark Post Oak Acorns The bark is similar to White Oak but not as flaky in older trees. The light to dark brown acorns are less than 1 in. length, with a cap covering about 1/3 of the nut.

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University of Tennessee - Forest Resources AgResearch and Education Center
901 South Illinois Avenue, Oak Ridge, Tennessee 37830 · Telephone: 865-483-3571 · Email: UTforest@utk.edu