Characteristics: The crown of the limber pine is often broad, symmetrical and often flat-topped. Typically Limber Pine is a small tree, with a height between 15 and 30 feet tall and a trunk diameter of 18 inches. This species of conifer can have multiple trunks. Older bark is gray and plate-like; thin and smooth on younger branches on the tree. Trees in windier regions will often have a pinkish bark color.