A native flowering plant from the Americas.  The common sunflower is most recognizable by their single large yellow apical "flower," with an initially greenish center that turns yellow-brown and then blackish as it matures.  They typically grow to heights of around 3 meters (10 feet) with record plants reach heights of 9+ meters (30+ feet). Sunflowers are grown for various purposes such as for food, cooking oil, livestock feed, and decoration.
sunflower