The large rounded flower clusters, to 12" more across, are of composed of hundreds of dainty pinkish-purple flowers are produced in mid to late summer and into fall atop tall, sturdy, upright to arching, hollow, purple spotted stems with whorled, medium green, rugose foliage. Joe Pye Weed, Eupatorium fistulosum but now classified Eutrochium fistulosum, is a long-lived, clump forming, deciduous, herbaceous, native perennial that is typically found growing along stream banks and in other relatively consistently moist areas but it does just fine under average garden conditions as well. Joe Pye Weed's nectar rich flowers attract butterflies and a variety of smaller pollinators including honeybees. Provide a full sun to partly shaded site in a moist to wet to average moist, fertile soil for optimum vigor, the sturdiest stems, and maximum flower production. Item# 475