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Polygonum hydropiperoides Michx.
USDA Symbol: POHY2
USDA Native Status: Native to U.S.
Swamp Smartweed is a member of the buckwheat family (family Polygonaceae) which includes mostly herbs, sometimes shrubs or vines, rarely trees, with small flowers in racemes, spike-like clusters, or in heads. Stems commonly have swollen nodes. (The family name refers to this, deriving from Greek words meaning many knees.) There are about 40 genera and 800 species, chiefly in north temperate regions. Rhubarb and Buckwheat are sources of food, and a few species are grown as ornamentals.
Plant CharacteristicsDuration: Perennial Habit: Herb Leaf:
Dark Green Fruit:
Bloom InformationBloom Color: Green
AK , AL , AR , AZ , CA , CT , DC , DE , FL , GA , IA , ID , IL , IN , KS , KY , LA , MA , MD , ME , MI , MN , MO , MS , NC , ND , NE , NH , NJ , NM , NV , NY , OH , OK , OR , PA , RI , SC , SD , TN , TX , VA , VT , WA , WI , WV Canada: NB
, PE USDA Native Status: L48(N),
AK (I?), PR(N), CAN(N)
Growing ConditionsWater Use: Medium
Light Requirement: Sun
CaCO3 Tolerance: High
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
Nueces River Authority
- Uvalde, TX
Recommended Species Lists
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Record Modified: 2012-06-30
Research By: TWC Staff