Appearance: Shrub-like, arching perennial herbaceous plant, over 10' high, reddish-brown stems, smooth, stout hollow and swollen at the joint where the leaf meets the stem.
Leaves: Alternate broadly oval and pointed at the tip, about 6" long, 3 - 4" wide.
Flowers: Greenish-white, branched clusters which grow from leaf axils, near the end of stems, blooming in late summer.
Fruit: Small winged, carry triangular, shiny and very small seeds.
Roots: Long, stout horizontal stems growing below the soil surface, called rhizomes, forming roots and producing new plants allow the plant to spread vegetatively as well.