Common ragweed, scientifically known as Ambrosia artemisiifolia, is a flowering plant native to North America. It typically grows in disturbed areas, such as roadsides and fields, and can reach heights of up to 4 feet. The plant produces small, green flowers that release large amounts of pollen, especially in late summer and early fall. This pollen is a major allergen for many people, contributing to seasonal allergies known as hay fever. Common ragweed thrives in various soil types and can spread rapidly, making it a common sight in urban and rural environments alike. Its ability to adapt to different conditions allows it to flourish in many regions.