lee dittmann. Pinus ponderosa is one of the Southwest's tallest trees in many parts of its range, growing to incredible heights of over 200 feet, with huge trunks 3-4 feet across. Named for its ponderous (heavy) wood, this pine is the major lumber tree in the Southwest. These woody behemoths grow on dry mountain slopes and mesas. They occur in green, park-like stands on dry, well-drained, and exposed southerly slopes or plateaus. Ponderosa Pines are easily recognized by their tall, straight, thick trunks, clad in scaled, rusty-orange bark that has split into big plates. One can easily identify some trees by smelling their bark. Ponderosa Pine bark smells like vanilla or butterscotch.