northern red oak - Fagaceae Quercus rubra


Common Namenorthern red oak
iTree CodeQURU5

Plant Form

FormTree: rounded and symmetrically crown
Height80 feet
Spread50 feet

Identification Description

Foliagegreen, lobed with bristled tips 4-8” long; shallow sinuses Leaf Type  Information Icon Simple
Barklight gray/brown, smooth when young; gray with flat-topped ridges, deep furrows with ages
Budterminal: conical, pointed; lateral: slightly raised; both having overlapping scales (imbricate) , many layers of scales, red to grayish brown Bud Arrangement Information Icon Alternate
Twigslender, red/brown with lenticels
Flowermale: green-yellow catkins in large groups; male and female on same tree (monoecious)
Fruitacorn with shallow cap about 1/4 of the length, mature in autumn after two seasons
Fall Colordark red

Site Characteristics

USDA Zones   info for zones pH LevelsSalt Tolerance
Min3b Min4.3 SoilModerate
Max8a Max7.3 SprayModerate

Shade ToleranceDrought ToleranceAllelopathy
Intermediate Intolerant Yes

Species Status

Nebraska Native Yes Check
U.S. Native Yes Check
Region of OriginUnited States, Canada
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