Helianthus annuus is a species of sunflower, native to North America, that can grow up to 10 feet (3 meters) tall with a flower head that can be up to 1 foot (30 cm) in diameter. It is an annual plant that is widely cultivated for its edible seeds and oil. The leaves are broad, ovate, and rough to the touch, while the flowers are bright yellow with brown centers.