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Fallopia sachalinensis
Giant Knotweed Smartweed-Buckwheat Family
Fallopia sachalinensis Polygonaceae
common names
  Giant Knotweed
  Sakhalin Knotweed
accepted scientific name
  Fallopia sachalinensis (F. Schmidt) Ronse Decr.
rules for finding collection records
  Fallopia sachalinensis (87)
  Polygonum sachalinense (319)
  Reynoutria sachalinensis (21)
family name
Image Author: ©2007 Jan Samanek,State Phytosanitary Administration,Bugwood.org
Image License: CC BY
Image Source
Category: Wildflowers
Flowers: Five petals
Petal colors: color color
Leaf: Alternate
Plant Observed last week of April thru 3rd week of October
Noxious weed in OR.

How Likely at this Location (19%)
Name Match (100%)
Plant Showiness (54%)
base map where plant found
mag select

grid lines base