Eupatorium purpureum

Read about Eupatorium purpureum in the Standard Cyclopedia of Horticulture
Eupatorium purpureum, Linn. Joe-Pye Weed. Lvs. whorled, commonly in 5's and 6's, oblong or lanceolate, taper-pointed, coarsely serrate: heads in large compound clusters, pale purple or flesh-colored, rarely almost white. N. Amer.—Common and variable. Tall, rank plant of low grounds (reaching 8-9 ft.), good for bold effects in border or against shrubbery. Var. maculatum, Darl. Of lower growth: Lvs. commonly in 4's, ovate-oblong, roughish-pubescent: heads in smaller clusters, more deeply colored. Var. foliosum, Fern. Similar but with the infl. surpassed by the long upper Lvs. Var. amoenum, Gray. Still lower (2 ft. high), smoothish: Lvs. sometimes merely opposite. The above text is from the Standard Cyclopedia of Horticulture. It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article. Click on "Collapse" in the header to hide this text.