Eupatorium dubium

Common Name: 
eastern Joe-pye weed
Scientific Name: 
Eupatorium dubium Willd. ex Poiret syn. Eupatoriadelphus dubius, Eutrochium dubium
Family Name: 
Asteraceae (Compositae) - Aster or Sunflower Family
Identification Notes
Life Cycle
native perennial, reproducing by seed
Stems
upright, stout, tall, unbranched, purple spotted or tinged, solid or partially hollow, rough pubescence
Stems of Eastern Joe-Pye Weed
Leaves
whorled 3-4 (5) per nodes, ovate narrow or broad, strongly 3-veined, margins toothed
Leaves of Eastern Joe-Pye Weed
Leaves of Eastern Joe-Pye Weed
Leaves of Eastern Joe-Pye Weed
Flowers
heads of purple disk (tubulate) florets, 6-9 florets per head; terminal cluster, round topped becoming cylindrical
Flowers of Eastern Joe-Pye Weed
Flowers of Eastern Joe-Pye Weed