Jack Pine is a small to medium-sized, native evergreen tree averaging (55 – 65 ft) high.  Crown small, irregularly rounded or spreading and flattened irregular.  Cones are retained for several years, resulting in a coarse appearance.  Trunk straight to crooked.  The leaves are evergreen, 2 – 3.75 cm long, and two twisted, divergent needles per fascicle, yellow-green in color.