American walnut is one of the most sought-after species in markets across the world and is unique to North America. Forest Inventory Analysis (FIA) data shows U.S. walnut constitutes 1.0% of total U.S. hardwood growing stock and while 0.31 million m³ is harvested each year, more than 1 million m³ of American walnut grows naturally during the same period. The sapwood of walnut is creamy white, whereas the heartwood is light brown to dark chocolate brown, making the difference in colour quite distinct. American walnut is tough, hard and of medium density and is considered one of the supreme species for high end furniture, cabinets, doors and interior joinery.