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Common Name: Pennsylvania Smartweed
Polygonum pensylvanicum is a Annual up to 0.70 metres tall.
It has medicinal uses.
Eastern N. America - Nova Scotia to Ontario, Minnesota, Florida and Texas.
Waste ground in moist soils[
]. Moist, disturbed places, ditches, riverbanks, cultivated fields, shorelines of ponds and reservoirs from sea level to 1800 metres[
An infusion of the plant tops has been used in the treatment of epilepsy[
An infusion of the leaves has been used to treat haemorrhages of blood from the mouth and to aid postpartum healing[
The leaves have been used as a wipe on the anus in treating bloody piles[
Seed - sow spring in situ.