Native Plants

Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

Enter a Plant Name:
Or you can choose a plant family:

Polygonum erectum

Polygonum erectum L.

Erect Knotweed

Polygonaceae (Buckwheat Family)

Synonym(s): Polygonum aviculare var. erectum

USDA Symbol: POER2

USDA Native Status: L48 (N), CAN (N)

From the Image Gallery

No images of this plant

Plant Characteristics

Duration: Annual
Habit: Herb
Fruit Type: Achene
Size Notes: Up to about 30 inches tall.

Bloom Information

Bloom Color: Yellow , Green
Bloom Time: May , Jun , Jul , Aug , Sep , Oct

Distribution

USA: AL , AR , CA , CT , DC , DE , GA , IA , IL , IN , KS , KY , LA , MA , MD , ME , MI , MN , MO , MS , MT , NC , NE , NH , NJ , NM , NV , NY , OH , OK , OR , PA , RI , SC , TN , TX , VA , VT , WA , WI , WV , WY
Canada: AB , MB , ON , QC , SK

Benefit

Use Food: Seed consumed, and plant likely cultivated, by indigenous peoples of eastern North America before the arrival of maize.
Attracts: Birds

National Wetland Indicator Status

Region:	AGCP	AK	AW	CB	EMP	GP	HI	MW	NCNE	WMVE
Status:	FACU		FACU		FACU	FAC		FACU	FACU	FACU

This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

Bibliography

Bibref 1222 - Rivers of Change: Essays on Early Agriculture in Eastern North America (1992) Smith, Bruce D.

Search More Titles in Bibliography

Web Reference

Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

USDA: Find Polygonum erectum in USDA Plants
FNA: Find Polygonum erectum in the Flora of North America (if available)
Google: Search Google for Polygonum erectum

Metadata

Record Modified: 2023-05-02
Research By: TWC Staff

Go back