Ageratum is a genus of flowering plants in the family Asteraceae, commonly known for their vibrant blue, purple, or white flowers. These plants are native to tropical and subtropical regions of the Americas and are often used in gardens and landscapes for their long-lasting blooms. They typically grow as annuals or perennials, depending on the climate. The most popular species is Ageratum houstonianum, often referred to as floss flower. This plant thrives in well-drained soil and prefers full sun to partial shade. Ageratum is also known for attracting pollinators like bees and butterflies, making it a beneficial addition to any garden.