pines are native to the Great Lakes area and much of Canada. They
will grow is dry soils and are usually found in sunny locations
growing with other jack pines. They tend to grow quickly during
their first 10 years of life but then slow down. They are usually
fairly small trees, reaching a height of only about 40-60 feet.
Jack pines almost always have straight trunks. Their branches spread
out unevenly, making the crown look ragged.
pines have short needles about 3/4-1-1/2 inches long. They are sharp,
pointy, and stiff. They grow in bundles of two, but each needle
usually points in the opposite direction. The bark is scaly and
has a dark reddish-brown color.
Jack pines form small cones that tend to curve
as they grow. They are usually about 1-1/2 inches long and are green
or purplish when they are full-grown and point toward the end of
the branch. As lower branches on the tree die from being shaded,
the cones have a tendency to hang on for several years. At this
stage they are dried out and turn a light brown or yellowish color.
to Ecosystems of the Upper Peninsula