Zones 2-9, 14-17, 31-41
Full, Partial
Moderate
Persicaria virginiana
Knotweed
Polygonaceae
Perennials
PERSICARIASturdy plants with jointed stems and small white or pink flowers. Some kinds tend to get out of hand and need to be controlled.
Persicaria virginianaNative to eastern North America, east Asia. To 2–4 ft. tall, spreading indefinitely by creeping rhizomes. Oval green leaves 3–10 in. long; insignificant flowers. The species is rarely found in gardens.
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