Conoclinium Coelestinum, commonly known as Blue Mistflower, is a species of flowering plant in the Asteraceae family. Other synonyms for this plant include Eupatorium coelestinum, Conoclinium coelestinum, Ageratina coelestinum, and Eupatoriadelphus coelestinus. Blue Mistflower is a perennial plant native to the southern United States and produces clusters of blue-violet flowers from late summer to fall. It is commonly used in landscaping because of its visual appeal and ability to attract butterflies and other pollinators. While the scientific name may vary slightly, the beauty and benefits of this plant remain consistent.