Whitebark Pine Ecosystem Foundation (WPEF)

We are a science-based non-profit dedicated to counteracting the decline of whitebark pine and enhancing knowledge about the value of its ecosystems.


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Whitebark Pine Ecosystem Foundation
PO Box 17943
Missoula, Montana 59808

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Western white pine

Pinus monticola

western white pine

western white pine

Tree: to 180′ and 8′ DBH; conic crown becoming broad and flattened

Bark: thin and smooth in younger trees, becoming dark gray to brown, broken into rectangular checkerboard-like pattern (sometimes circular) with deep furrowing

Needles: 2’’-4’’, 5 per fascicle, bluish-green, underside with faint line down midrib; lacks distinct stomatal bloom found in sugar pines

Seed Cones: 5’’-8’’, cylindrical, recurved; dark on inner surface of scale, light brown near tip; on tree year round

Habitat: sea level-9000’, gentle, moist slopes, oceanside in north moving upslope and inland southward, associating with many different conifers across range

Observations: easily found in eastern Sierra Nevada at appropriate elevations, also interior mountains of Washington and Oregon, common above 5,500′ in Klamath Mtns.

Remarks: high mortality across West due to white pine blister rust, bark beetles, and dwarf mistletoe (Arceuthobium monticola)

Information from Conifers of the Pacific Slope by Michael Kauffmann.