Definition
*Ambrosia trifida*, commonly known as giant ragweed, is an annual plant notorious for causing allergies. Imagine it as the hulk of the allergy-inducing plant world, big and impactful. This plant can grow to impressive heights, sometimes reaching over 15 feet. It thrives in moist, disturbed soils, like along riverbanks and in agricultural fields. *Ambrosia trifida* releases significant amounts of pollen in the late summer and fall. The pollen triggers hay fever and other allergic reactions. Its size and widespread distribution make it a significant allergy concern.