Bright green, slender hollow stems to about 4 feet high with ash colored rings at each joint.Invasive evergreen perennial. Hardy to about -20 degrees F. Full sun or partial shade. Bears tiny light brown catkin-like flowers from summer to autumn.
Spreading, clumping, marginal evergreen perennial with thin, wiry deep green stems to about 6 to 8 inches tall and with an indefinite spread. Tiny catkin-like light brown flowers from summer to autumn.
