Common Sunflower (Helianthus Annuus) is an annual forb in the Aster Family (Asteraceae). It’s native to the United States, Mexico and parts of South America. Blooms Jul-Oct and grows 2-9 ft. Likes moist to dry soils and full sun exposure.
Common Sunflower is used as a crop in many parts of the world. Some have been hybridized to grow tall with big flower heads. It’s also the state flower of Kansas.