American red oak is the dominant species in the U.S. hardwood forests, making up nearly one fifth of their standing hardwood volume – with distinctive grain, and wood that is not always red in colour. The name comes from the leaf colour in the fall. Red oak trees grow only naturally and almost exclusively in North America, although planted elsewhere. They are widely distributed throughout most of the eastern United States in mixed hardwood forests. American red oak is growing 55.2 million m3 per year while the harvest is 33.9 million m3 per year. The net volume (after harvest) is increasing 21.3 million m3 each year – a size equivalent to five Wembley stadiums.