State Tree of New Jersey
Northern Red Oak
Northern Red Oak
Fagaceae Quercus rubra
Leaf
Alternate, simple, 5 to 8 inches long, oblong in shape with 7 to 11 bristle-tipped
lobes.
lobes.
Flower
Staminate flowers are borne on catkins. Pistillate flowers borne on spikes.
Appears with the leaves in April or May.
Appears with the leaves in April or May.
Fruit
Acorns are 3/4 to 1 inch long and nearly round. The cap is flat and
thick, covering about 1/4 of the acorn. Mature in 2 years, ripens August to late October.
Twig
Quite stout, red-brown, and glabrous. Terminal buds are multiple, quite
large, ovoid, and covered with red-brown, mostly hairless scales.
Bark
On young stems, smooth. Older bark develops wide, flat-topped ridges
and shallow furrows. The shallow furrows form a pattern resembling ski tracts.
Form
A medium-sized to large tree that develops a short trunk and round crown when open grown, straight with a clear bole when grown with the competition.
Copyright 2019 Virginia Tech Dept. of Forest Resources and Environmental
Conservation; Text by: John Seiler, Edward Jensen,
Alex Niemiera, and John Peterson; Silvics reprinted from Ag
Handbook 654; range map source information
Conservation; Text by: John Seiler, Edward Jensen,
Alex Niemiera, and John Peterson; Silvics reprinted from Ag
Handbook 654; range map source information