Botanical name: Eupatorium coelestinum
Common name: “Blue Hardy Ageratum”
Size: 3-3.5′ x 2′
Light: Full sun/pt shade
Small, fluffy, sky-blue flowers begin opening in early-autumn clustering in broad, flat, flower heads. Plants may be cut back early in the season to control height. This native perennial spreads freely from underground stems and seeds. Provides beautiful late-season color and wonderful cut flowers.
Photo gallery of Eupatorium coelestinum: