Ambrosia trifida, commonly known as giant ragweed, is a perennial plant native to North America. It typically grows in disturbed areas, such as fields and roadsides, reaching heights of up to 3 meters (10 feet). The plant features large, lobed leaves and produces clusters of greenish-yellow flowers that can release significant amounts of pollen. This species is known for its role in causing seasonal allergies due to its high pollen production. Ambrosia trifida can also compete with crops, making it a problematic weed for farmers. Effective management strategies are essential to control its spread and minimize its impact on agriculture.