Topic summary
Southern yellow pine

Extracted from the Wikipedia article Yellow pine.
Western United States
Jeffrey pine wood and ponderosa pine wood are sold together as yellow pine. 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) versus 35 lb/cu ft (0.56 g/cm) for shortleaf pine).