The leaves are 4 to 8 inches long, 3-lobed, bristle-tipped, taper to a rounded base, obovate in outline, thick petioles less than 1/2 inch long, top is dark yellow-green, beneath is paler with a tawny colored down. Acorns are 3/4 inch long, with a shallow cup shaped like a goblet, and somewhat hairy.
How do you identify a blackjack tree?
A small to medium-sized oak, 30-50 ft, with bristle-lobed leaves that are shiny on top & rusty-yellow hairy beneath. The short, nearly black trunk divides into many dense, contorted limbs, bark dark, furrowed; dead branches persistent.
How fast do blackjack oaks grow?
The acorn is small, 12–20 mm (0.47–0.79 in) long and 10–18 mm (0.39–0.71 in) broad; like other red oaks, it takes 18 months to mature.
|Subgenus:||Quercus subg. Quercus|
|Section:||Quercus sect. Lobatae|
What is Black Jack Oak good for?
The wood is hard, heavy, and strong with a wide, light sapwood. It is used mainly for fence posts, railroad ties, and fuel . IMPORTANCE TO LIVESTOCK AND WILDLIFE : Blackjack oak provides cover and habitat, and acorns are an important food source for mammals and birds .
Why is it called blackjack oak?
Common name is in reference to its leathery, obovate, blackjack-like, dark green leaves (to 7” long) that are widest at the apex which has 3-5 shallow, bristle-tipped lobes. Leaves are hairy and rusty-brown beneath.
Is Black Jack Good firewood?
Black cherry wood is also used for paneling, interior trim, veneers, handles, crafts, and toys. Firewood Value: It makes good firewood and is easy to split.