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.


[email protected]

Whitebark Pine Ecosystem Foundation
PO Box 17943
Missoula, Montana 59808

Follow Us

Rocky Mountain bristlecone pine

Pinus aristata

Rocky Mtn. bristlecone pine

Rocky Mtn. bristlecone pine

Tree: to 45′ and 3′ DBH

Bark: bark gray to red-brown, shallowly fissured, with long, flat, irregular ridges.

Needles: 1”- 1.5”, 5 per bundle, deep blue-green, with drops and scales of resin

Seed Cones: 3”- 4.5”, maturing in 2 years, shedding seeds and falling soon thereafter

Habitat: dry, south-facing slopes, 7,000’- 12,000′, generally exposed, in evenly spaced forests

Observations: Montane to subalpine areas of Colorado, New Mexico and Arizona (the San Francisco Peaks)

Information from Conifers of the Pacific Slope by Michael Kauffmann.