All Live Trees – Growing stock, rough, and rotten trees one inch in D.B.H and larger.
Growing-Stock Trees – Live trees of any size except rough and rotten trees.
Poletimber Trees – Live, vigorous, and well-formed trees of commercial species at least 5.0 inches in D.B.H but smaller than sawtimber size.
Rotten Trees – Live trees of any size that do not contain a merchantable 12-foot saw log, now or prospectively, because of rot (more than 50 percent of the cull volume of the tree is or will become rotten). Only commercial species are considered.
Rough Trees – Live trees of any size that do not contain at least one merchantable 12-foot saw log, now or prospectively, because of roughness or poor form. Only commercial species are considered.
Saplings – Live, vigorous, and well-formed trees of commercial species, usually 1.0 to 5.0 inches in D.B.H.
Sawtimber Trees – Live trees of commercial species containing at least one 12-foot saw log or two noncontiguous saw logs, each at least eight feet long, and having a maximum allowable defect of 67 percent of the gross tree volume. Softwoods must be at least 9.0 inches in D.B.H. and hardwood at least 11.0 inches in D.B.H.
Seedlings – Live trees of commercial species with diameters less than 1.0 inch that are expected to survive (not diseased and not heavily damaged by logging, browsing, or fire). Only softwood seedlings over six inches tall and hardwood seedlings over one foot tall are counted.
Short-Log Trees – Sawtimber-sized trees of commercial species that contain at least one merchantable eight-foot to 11-foot saw log (but not a 12-foot saw long).