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Northwest Conifers

Ponderosa Pine – Pinus ponderosa Speaker

Ponderosa pine

Ponderosa Pine at Tualatin Hills Nature Park

Map

USGS Distribution Map

Needles: Bundles of 3, 5-10" long

Cones: 3-6" long, egg shaped

Bark: Orange puzzle pieces

Where: Below 5000 ft.

  

Needles: Ponderosa Pine has 3 needles per bundle. The needles are up to 10 inches long, with sharp points. Ponderosa Pine is easy to identify outside of southwest Oregon because it is the only 3 needle pine in the rest of the Northwest.

Ponderosa pine

Cones: The egg-shaped cones are 3 to 6 inches long and have a sharp point on each scale. 

Bark: The bark is the most striking and distinctive characteristic of this pine, with flat red or yellow plates shaped like the pieces of a jigsaw puzzle. The bark is more colorful on older trees, most notably on large trees growing east of the Cascades.

Where it grows: Ponderosa Pine is common throughout much of the western US. It is the most common conifer in the Northwest east of the Cascades, growing at elevations up to 5000 feet. Although it thrives in dry, mountainous regions, it is also native to the wet habitat of the Willamette Valley, but there the bark loses some its distinctive color, as shown by the photo below. Ponderosa Pine is the state tree of Montana.

Two subspecies of Pinus ponderosa grow in the Northwest:*

  • Subspecies ponderosa grows east of the Cascades.
  • Subspecies benthamiana grows in the Willamette Valley and the coastal mountains of southwest Oregon.

Similar Tree: Jeffrey Pine grows in southwest Oregon and California.

Uses: Ponderosa Pine lumber is widely used in home construction, window and door frames, moldings, and furniture. Squirrels, chipmunks and many kinds of birds eat the seeds. Some cache the seeds, which facilitates the propagation of more pine trees.

Names: Lewis and Clark encountered this pine in 1805 and were impressed by its long needles. In 1826, David Douglas named it for its heavy (ponderous) wood. Other common names: Yellow Pine, Western Yellow Pine, Blackjack Pine.

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*The Gymnosperm Database lists these as subspecies. Oregon Flora Project lists them as varities.


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photo

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Pollen cones

Ponderosa pine

Ponderosa Pine bark near Bend, Oregon

Ponderosa pine

Ponderosa Pine Bark near Portland


© 2011 Ken Denniston