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Polygonum californicum
California knotweed Smartweed-Buckwheat Family
Polygonum californicum Polygonaceae
common name
  California knotweed
accepted scientific name
  Polygonum californicum Meisn.
rules for finding collection records
  Polygonum californicum (232)
family name
Image Author: ©2004 Steve Matson
Image License: Author's permission
Image Source
Category: Wildflowers
Flowers: Five petals
Petal colors: color color
Leaf: Alternate
Plant Observed last week of April thru 3rd week of November

How Likely at this Location (14%)
Name Match (100%)
Plant Showiness (36%)
Links to Plant Photos
Cal Photos (19)
Paul Slichter (6)
base map where plant found
mag select

Native Plant Status
native status map native status map native status map native status map
native Native
native Not Present

grid lines base