Native Plants

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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)

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Plant Characteristics

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

Bloom Information

Bloom Color: Yellow , Green
Bloom Time: 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: U.S. Army Corps of Engineers. (2023). 2022 National Wetland Plant List, version 3.6. U.S. Army Engineer Research and Development Center, Vicksburg, MS. https://wetland-plants.usace.army.mil/. Click here for map of regions.

Bibliography

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

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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: 0000-00-00
Research By: TWC Staff

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