Pennsylvania Smartweed
Polygonum pensylvanicum L.
Polygonaceae (Smartweed Family)
▲▼ mature plants, showing flowers
▲▼ inflorescences
▲▼ flowers
▲▼ stems and ochrea
Pennsylvania Smartweed:
* most common and aggressive of the Smartweed group
* usually much-branched summer annual, 1-3' tall
* terminal flower spikes have pink to white flowers
* stems green to reddish in color; leaves green, lanceolate