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Pinus ponderosa, commonly known as the ponderosa pine, [3] bull pine, blackjack pine, [4] western yellow-pine, [5] or filipinus pine, [6] is a very large pine tree species of variable habitat native to mountainous regions of western North America. It is the most widely distributed pine species in North America.
Ponderosa pine forest is a plant association and plant community dominated by ponderosa pine and found in western North America. It is found from the British Columbia to Durango, Mexico . [ 1 ] In the south and east, ponderosa pine forest is the climax forest , while in the more northern part of its range, it can transition to Douglas-fir or ...
The pure stands of Rocky Mountain ponderosa pine forest receive about 15–20 inches (380–510 mm) of annual precipitation. [7] In the northern Rockies, about 40-50% falls in April through September, while in the southern Rockies, about 66-75% falls during these months. [7]
The Willamette Valley ponderosa variant only grows on the valley floor, unlike the Douglas-fir, which grows on hillsides, and the wood is softer and easier to mill than the native hardwoods. [1] Because of this, when early settlers used wood from the trees to build homes and cleared land for agriculture, the population was "decimated". [ 1 ]
Jeffrey pine wood and ponderosa pine wood are sold together as yellow pine. [6] Both kinds of wood are hard (with a Janka hardness of 550 lbf (2,400 N)), but the western yellow pine wood is less dense than southern yellow pine wood (28 lb/cu ft (0.45 g/cm 3 ) versus 35 lb/cu ft (0.56 g/cm 3 ) for shortleaf pine).
Red pine (aka Norway pine) Pinus resinosa: 1953 [31] Mississippi: Southern magnolia: Magnolia grandiflora: 1952 [32] Missouri: Flowering dogwood: Cornus florida: 1955 [33] Montana: Ponderosa pine: Pinus ponderosa: 1949 [34] Nebraska: Eastern cottonwood: Populus deltoides: 1972 [35] Nevada: Single-leaf pinyon: Pinus monophylla: 1959 [36] Great ...
Old growth ponderosa pine in Lost Forest. Lost Forest covers approximately 9,000 acres (36 km 2). It is a self-sustaining stand of ponderosa pines growing in the arid high desert, 40 miles (64 km) from the nearest contiguous pine forest. The Bureau of Land Management considers 4,153 acres (1,681 ha) to be prime forest land with large old-growth ...
A pool of water, a remnant of the last rains, in a dry wash in Tonto National Forest Unofficial trail sign in Pine Canyon. The Tonto National Forest, encompassing 2,873,200 acres (1,162,700 ha; 11,627 km 2), is the largest of the six national forests in Arizona and is the ninth largest national forest in the United States.