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Erect knotweed

Polygonum erectum

Also called Devil's Shoestring, Wireweed, Leathery Knotweed, Striate Knotweed

Erect knotweed
Photo: Cbaile19, CC0

Erect knotweed is a North American annual herb in the buckwheat family, native to the northeast and north-central United States and parts of Canada. It is a weedy plant of bottomland and disturbed ground, grown historically for seed food by Native Americans.

Family
Polygonaceae (Buckwheat family)
Light
Part shade, Full sun
Water
Keep soil evenly moist during the growing season; tolerates a range of moisture in the wild.
Soil
Moist, fertile loam or garden soil; tolerates disturbed ground.
Temperature
Hardy in temperate climates; grows in cool to warm summers and dies back with frost.
How easy
Easy
Edible
Yes, some parts
Native range
C. & E. Canada to C. & E. U.S.A.
Climate
temperate

About

Polygonum erectum, commonly called erect knotweed, is a North American species of herbaceous plant in the buckwheat family (Polygonaceae). It is found primarily in the northeastern and north-central parts of the United States, but with scattered populations in other parts of the US and also in Canada.

Its natural habitat is in bottomland forests and riparian areas. It is tolerant of ecological degradation, and can also be found in disturbed open areas such as pastures and lawns.

Other Polygonum plants

European knotweed · Oval-leaf knotweed · Prostrate knotweed · Indian Knotgrass · Douglas' knotweed · Knotweed

Text excerpted from the Wikipedia article Polygonum erectum by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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