Sustainable knotty pine is harvested from plantation forests and is a softwood that is usually light in color with pink-brown variations. Distinct color variations occur and the grain can appear straight or erratic depending on how it is cut from the log. The wood will darken and yellow with age, adding character and charm. It machines to a fine, smooth finish and easily accepts lighter stains and paint. Staining is recommended to achieve a uniform appearance because pine naturally contains resins that can affect penetration. Knots should be sealed before painting.