Arkansas Tree Database

Blackjack Oak

Blackjack Oak

Scientific name:

Quercus Marilandica

Size:

15'-50' tall

Leaves:

alternate, simple, 4"-10" long, either pear- or wedge-shaped, often shallowly 3-lobed at tip, bristle-tipped

Flowers:

inconspicuous

Fruit:

acorn half-enclosed in cup, ripening in autumn of the second year

Fall Interest:

leaves persist on tree; deciduous

Culture:

sun; well-drained soil; drought tolerant

Disease/Insect:

Use:

shade tree; wood for fuel, charcoal

Cultivars:

Notes:

bark rough, thick, blackish, and furrowed into nearly square plates; well-limbed along its trunk, it tends to retain dead limbs on middle and lower; considered an indicator of dry or poor soil; one of the first trees to occupy an area after a fire; butterfly larval host; native to Arkansas

Resources:



Click thumbnail to enlarge images

Blackjack oak bark on trunk Blackjack oak bark on trunk Blackjack oak leaf, underside Blackjack oak leaf, showing shallow lobes and bristles on the tips Blackjack oak leaf, fall Blackjack oak leaf, showing bristles on the tips Blackjack oak acorns Blackjack oak acorns Blackjack oak acorn, half enclosed in cup