Conyza Canadensis is a weed that belongs to the Asteraceae family. Commonly known as Horseweed, this plant has several synonyms based on its characteristics and properties. These include Marestail, Canadian Fleabane, Butterweed, Fireweed, and Bog Hemp. Horseweed is native to North America and is considered an invasive species in many parts of the world. It grows rapidly and can reach a height of up to 10 feet. Horseweed is commonly found in disturbed areas, pastures, and agricultural fields. It is often difficult to control due to its resistance to herbicides. The use of integrated pest management practices may be necessary to manage this weed effectively.