This semi-vining plant had swollen, slightly reddish joints — almost like knees — to which were clasped lush, lance-shaped leaves. Individually, the flowers were small, each a round knot ...

Got a problem with invasive ground cover weeds in your yard? Learn which plants are a problem and how to stop them in their ...

This viny plant is a member of the “smartweed” family, Polygonaceae, which includes hundreds of species, many of which are valued in wetlands as a source of wildlife food (especially for ducks).