Eupatorium Capillifolium is a common name for a species of plant otherwise referred to as dog fennel. Other synonyms for this plant include tickweed, swamp dogwood, coastal plain thoroughwort, and Seaside thoroughwort. This plant is native to North and Central America and is commonly found in moist environments such as swamps and wetlands. It is characterized by its tall stems, small, white flowers, and fern-like leaves. It is often used for medicinal purposes and has been known to treat ailments such as colds and fever. Despite its potent medicinal properties, it is considered invasive in some areas due to its tendency to spread rapidly and overtake native species.