Eastern White Pine
(Pinaceae Pinus strobus)
Adopted in 1945.
The White pine, Pinaceae Pinus
strobus, is considered to be
the largest conifer in the
northeastern United States.It was
adopted as Maines state tree in
1945. Leaves (needles) are soft,
flexible and bluish-green to silver
green in color and are regularly
arranged in bundles of five. Needles
are 2 1/2-5 inches long and are
usually shed at the end of the
second growing season. Flowers (strobili)
occur on the tree. Cones are 4-8
inches in length, usually slightly
curved. Cone scales are thin and
never have prickles. Cones also have
a fragrant gummy resin.
Eastern white pine also
called northern white pine, is one
of the most valuable trees in
eastern North America. Before the
arrival of white men, virgin stands
contained an estimated 3.4 billion
m³ (600 billion fbm) of lumber. By
the late 1800's most of those vast
stands had been logged. Because it
is among the more rapid growing
northern forest conifers, it is an
excellent tree for reforestation
projects, landscaping, and Christmas
trees and has the distinction of
having been one of the more widely
planted American trees.
Leaf: Evergreen, 3 to 5
inches long, with five blue-green,
slender needles per fascicle. A
fascicle sheath is not present.
Needles appear blue because of 3 or
more lines of stomata.
Flower: Monoecious; males
cylindrical, yellow, in clusters
near branch tips; females light
green, tinged in red, at ends of
Fruit: Cones are 4 to 7
inches long, cylindrical, with thin,
rounded cone scales, very resinous.
Cones are borne on a long stalk.
Maturing August to September.
Twig: Slender, gray-green
to orange-brown in color.
Bark: On young trees;
thin, smooth and gray-green in
color. Later becoming thick,
reddish-brown to gray-brown with
prominent ridges and furrows.
Form: A large tree with a
very straight stem. The crown is
conical when young, later developing
wispy, horizontal branches.
Plantae -- Plants
Spermatophyta – Seed
Coniferophyta – Conifers
Pinaceae – Pine family
Pinus L. – pine
Pinus strobus L.
– eastern white pine