*Polygonum douglasii E.L. Greene. Section: Duravia. Common name: Douglas’s Knotweed. Phenology: Jun-Oct. Habitat: Disturbed areas. Distribution: Native of n. and w. North America, to n. Mexico (BCN, SON). Reported for VA in FNA.
Origin/Endemic status: Native
Synonymy ⓘ: = C, Can, F, FNA5, GrPl, K4, Mex, Mi, NE, NY, S13; > Polygonum douglasii Greene ssp. douglasii. Basionym: Polygonum douglasii Greene 1885
Links to other floras: = Polygonum douglasii - FNA5
Show parent genus | Show parent in key(s)
Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: FACU (name change)
- Eastern Mountains and Piedmont: UPL (name change)
- Great Plains: FACU (name change)
- Midwest: FACU (name change)
- Northcentral & Northeast: FACU (name change)
Hover over a shape, letter, icon, or arrow on the map for definition or see the legend.
© Ryan Durand, some rights reserved (CC BY), uploaded by Ryan Durand source CC-BY | Original Image ⭷
© Chloe and Trevor Van Loon, some rights reserved (CC BY), uploaded by Chloe and Trevor Van Loon source CC-BY | Original Image ⭷
© Brad Von Blon, some rights reserved (CC BY), uploaded by Brad Von Blon source CC-BY | Original Image ⭷
© Chloe and Trevor Van Loon, some rights reserved (CC BY), uploaded by Chloe and Trevor Van Loon source CC-BY | Original Image ⭷
© Chloe and Trevor Van Loon, some rights reserved (CC BY), uploaded by Chloe and Trevor Van Loon source CC-BY | Original Image ⭷Feedback
See something wrong or missing on about Polygonum douglasii? Let us know here: (Please include your name and email if at all complicated so we can clarify if needed.) We greatly appreciate feedback, and will include updates from you in our next webapp update, which can take a few months. If a species is not keyed, that's because keying is ongoing. Please don't send us feedback about unkeyed species.
Horticultural Information
No horticultural data found for this taxon.