Photographs: Reenaree, Co.Cork
White or pinkish-white flowers in loose panicles.
Narrow-ovate to lanceolate leaves, sometimes hairy on underside.
Forms thickets, spreads by means of rhizomes. Invasive. Height: to 1.5m
Increasingly found on roadsides, river banks, waste ground.
Similar: Giant Knotweed, Fallopia sachalinensis.
To 3m, greenish-white flowers.
Photographs above: Reenaree, Co.Cork. October 2006