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  1. Blackjack oaks in the Cross Timbers can grow from 15 to 18 m (50 to 60 ft) high but seldom reach more than 12 m (40 ft), with a trunk diameter of 41 cm (16 in). The leaves are from 10 to 25 cm (4 to 10 in) in length and about the same width.

  2. Blackjack Oak is a native medium-sized tree or shrub found in central and eastern USA and all areas of NC except the higher elevations. It is found in fields, woodland edges and dry ridges of barren areas.

  3. Blackjack oak is a small to medium-sized tree with a rounded, irregular crown; distinctive bark; and a tendency to retain dead branches on the middle to lower part of the trunk. It is well limbed along the entire length of the trunk. Leaves are distinctively wedge- or bell-shaped; alternate, simple, bristle-tipped, leathery, and shallowly 3-lobed.

  4. Blackjack Oak Tree Identification: Tips & Tricks. There are a couple of other oaks that sometimes produce leaves that vaguely resemble the blackjack oak. But the species you’d most likely confuse them with is the southern red oak (Quercus falcata).

  5. The blackjack oak (Quercus marilandica) is also known as the Jack oak, black oak, and barren oak. A small deciduous tree that grows 20 to 30 feet (maximum 90 feet) with a trunk diameter of 1 foot or less. It is similar to the post oak which also grows with blackjack oak, but the leaf lobes are more pronounced and not bristle-tipped.

  6. The Blackjack Oak is a small to medium sized tree with distinct, stout, irregular branches. It is very tolerant of poor, dry conditions, but does not tolerate wet conditions. This oak's common name is in reference to its dark, blackjack-like leaves.

  7. 13 Αυγ 2018 · Leaves on the blackjack oak measure 4 to 8 inches long and wide, and are widest toward the tip. All varieties of blackjack oak have leaves that are simple, leathery, and have 3 (rarely 5) broad lobes that are very shallowly incised.

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