Balsam bark is smooth on young trees and dotted with blisters filled with resin. The small, blunt cones are oblong, about six centimeters long and two and a half centimeters wide and appear in bunches. They stand upright on the branch. The needles are two to three centimeters in length, are rounded at the tip and are a dark, shiny green in colour. Unlike spruce needles, fir needles are flat and will not roll between your fingers.