Eupatorium coelestinum - Hardy Ageratum

Eupatorium coelestinum, commonly called mistflower, is a late summer to fall-blooming herbaceous perennial that is native to the Eastern United States. It looks like annual ageratum and in that regard is sometimes commonly called hardy ageratum. But it is perennial and can spread aggressively by rhizomes. Type: Herbaceous perennial Family: Asteraceae Native Range: Central and southeastern United States, West Indies Zone: 5 to 10 Height: 1.50 to 3.00 feet Spread: 1.50 to 3.00 feet Bloom Time: July to October Bloom Description: Blue Sun: Full sun to part shade Water: Medium Maintenance: Medium Suggested Use: Naturalize Flower: Showy Attracts: Butterflies