Description from Bluestone Perennials
A new choice Joe Pye Weed flowering July to September. Robust plants carry wine-red coloration, particularly in the stems. Eupatorium Gateway has flower clusters that are deep pink. In the background, along pond or stream edges, or on the edge of woodlands; it is truly a showy plant. Road salt tolerant. This handsome statuesque stunner is tidy and strong stems keep it standing tall. Joe Pye Weed is adored by butterflies.
Best in a consistently moist site. If height control is desired, pinch plants in early June when they are about 3′ tall. This will cause additional branching to emerge from one pinched stem which creates bushier plants with just slightly smaller 5″ diameter flowers. Benefits from division every 4-5 years in spring or fall. Slow to emerge in spring. Stems and seedheads are attractive in early winter.