Polygonum

From Salish Sea Wiki

Polygonums are a varied mix of introduced rhizomatous shrubs and native and introduced forbs. Native forbs are uncommon in the lowland Salish Sea, introduced Eurasian field weeds like Polygonum persicaria are a much more common species in damp soils. Polygonum cuspidatum (Japanese knotweed), P. x bohemicum (bohemian knotweed) and P. sachalinense (giant knotweed) is an important introduced rhizomatous shrub species that is increasingly covering areas in the Salish Sea. While we may ultimately consider reintroduction of native Polygonum, most of this page will likely be focused on the massive challenge of how to manage the introduction of Japanese knotweed.

Polygonum cuspidatum (Siebold & Zucc.), Japanese Knotweed

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