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Loos, Peter
Quercus stellata Wangenh.
Post oak
USDA Symbol: qust
USDA Native Status: Native to U.S.
This is a 40-50 ft., coarse-branched, deciduous oak with a dense, oval crown. The trunk is gray to light reddish-brown. Leaf blades variable, 3 to 5 inches long or longer, wavy margined to deeply lobed; the lobes rounded and up to 4 on each side, the upper pair often much larger than the others. Acorns up to 3/4 inch long, sometimes to 1 1/4 inches, the cup without the fringe found in Bur Oak (Quercus macrocarpa). Post oak is a variable tree with great variation in leaf, bark and habit.
The wood is marketed as White Oak and used for railroad cross-ties, posts, and construction timbers. Of large size in the lower Mississippi Valley where it is known as Delta Post Oak. Post Oak and Blackjack Oak (Quercus marilandica) form the Cross Timbers in Texas and Oklahoma, the forest border of small trees and transition zone to prairie grassland.
Bloom Information
Bloom Color: Yellow , Brown
Bloom Time: Mar , Apr , May
Distribution
USA: AL , AR , CT , DC , DE , FL , GA , IA , IL , IN , KS , KY , LA , MA , MD , MO , MS , NC , NJ , NY , OH , OK , PA , RI , SC , TN , TX , VA , WV
Native Distribution: MA to c. FL, w. to e. KS & c. TX
Native Habitat: Dry, upland ridges & prairie edges,
USDA Native Status: L48(N) Growing Conditions
Water Use: Medium
Light Requirement: Part Shade
Soil Moisture: Dry
CaCO3 Tolerance: Medium
Cold Tolerant: yes
Soil Description: Dry to moist, rocky or sandy soils. Sandy, Sandy Loam, Acid-based.
Conditions Comments: Post oak is the most common oak throughout Texas. The typical places to see it are sites with sandy or gravelly soils. Its acorns are an important food source for deer, squirrels, wild turkeys and other wildlife. Larval host for several butterfly species. This plant is common in the central and southern forest regions, where it is a medium-sized tree. This is the ultimate drought resistant
tree, but also grows in soggy, flatwoods soils. In dry portions of the western part of its range it is smaller. Its roots are extremely sensitive to disturbance. Susceptible to oak wilt. Not often used in landscape situations. Slow-growing and long-lived.
Benefit
Use Ornamental: Shade
tree, Attractive
Use Wildlife: Nesting site, Substrate-insectivorous birds, Cover, Fruit-mammals, Fruit-birds, Fruit-rodents, Fruit-deer.
Attracts: Birds , Butterflies
Larval Host: Northern hairstreak, Horaces Duskywing
Propagation
Description: Oaks are most often propagated from seed. No pretreatment is necessary. Plant immediately – outdoors or in deep containers to accomodate long initial taproot. The acorns sprout without a dormancy period and begin to germinate as soon as they fall from t
Seed Collection: Best quality acorns are picked or shaken from the tree. Collect when color has changed to brown. Best if sown immediately as acorns lose viability quickly in storage. Short-term storage in moist, shaded saw dust or sand. Acorns to be sown immediately can be soaked in hot water for 15 min. to prevent weevil infestation. Stored seed should be fumigated with methyl bromide.
Seed Treatment: Not Available
Commercially Avail: yes
Mr. Smarty Plants says
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Possible identification of Post Oak in New Braunfels, TX
January 27, 2006
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Metadata
Record Modified: 2013-04-03
Research By: TWC Staff
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