Oak tree are one of the most vulgar trees in the United States . The National Arbor Day Foundation numbers 60 coinage of oak as native to the United States . In 2004 , the oak tree was formally recognise by Congress as America ’s National Tree . Texas is home to identification number of different species of oak , from giant shade Sir Herbert Beerbohm Tree to smaller shrubs .

Live Oak

The great circularise branch of lively oak tree ( Quercus virginiana ) were once prized for shipbuilding . The trees have small , pinnate leaves and profoundly groove dark gray bark . alive oak make dark brown acorns approximately 1 inch long . The Grant Wood of live oak is very warm and rot tolerant , and the massive limbs sometimes reach the ground . The trees are favorites in landscape gardening , remaining evergreen year round . Live oaks thrive in a mixed bag of soils and tolerate drouth well . They spring up into the southern region of Zone 7 .

Post Oak

Post oak ( Quercus stellata ) was the source of fence posts when many area of Texas were first fenced . Emily Post oaks can pasture in size to simple shrubs to 75 feet tall , according to Texas A&M University . The leafage of post oak tree are deeply lobed , and the barque resemble gray scales . Post oak trees produce inch - long , cherry - brown acorns . They are stout to Zone 5 .

Red Oak

The leave of absence of Texas red oak ( Quercus texana ) turns vivid crimson and orangish in the downfall . The trees rise in the first place in North Central to Central Texas in limestone dirt . The parting are oblong and deeply lobed . The bark may be bland and light grey or rough and a darker gray . The acorns are circular , from 1/2 to 1 inch long and a glowering red-faced - chocolate-brown . Red oak tree do n’t tolerate cold well and grow only into Zone 8 .

Bur Oak

Bur oaks ( Quercus macrocarpa ) have long taproots , which make them very drouth tolerant . These tight - growing , prominent tree diagram are a favorite with landscapers throughout Texas . Bur oak leaves can be up to a foot long , according to Texas A&M University . The barque of the bur oak tree is buddy-buddy , dour chocolate-brown and deeply grooved . The trees producelarge acornsup to 2 inches long , with attractive laciniate caps . Bur oaks are stalwart to Zone 3 .

Gambel Oak

Gambel oaks ( Quercus gambelii ) grow above 6,000 feet in heavy coppice in the batch of West Texas . Tree may produce as tall as 25 feet . The dark gullible leaves are profoundly lob and fuzzy on the underside , and the bark is clear grey and usually smooth . The acorns are modest , about 1/2 inch in diameter and dark Brown University . The Tree are hardy to Zone 5 but never farm at modest elevations .

White Oak

White oaks ( Quercus alba ) farm in the piney woods of East Texas . white-hot oaks can get up to 100 invertebrate foot tall and produce lots of 1/2- to 3/4 - inch long , sullen brown acorn , which are an important intellectual nourishment source for wildlife . The light green , lobed leaves turn an attractive red in fall . The bark of live oak tree is light grey to silver and flake easily . These trees will mature to Zone 4 , though they require acidic soil .

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