Polygonaceae
Southern jointweed
Polygonella americana
- Family
- Polygonaceae
- Genus
- Polygonella
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Common names
By language (1)
- English
- Southern jointweed
Flowers
- In flower
- May to October (from 70 flowering iNaturalist observations worldwide)
Characteristics
- Growth habit
- Subshrub
- Lifespan
- Perennial
- In the US and Canada
- Lower 48 states: native
Photos
FlowerPhoto: Evan M. Raskin, CC BY 4.0, from iNaturalist 
FlowerPhoto: Brian Finzel, CC BY-SA 4.0, from iNaturalist 
FlowerPhoto: John Kees, CC0, from iNaturalist 
FlowerPhoto: Sam Kieschnick, CC BY 4.0, from iNaturalist 
Photo: Alan Weakley, CC0, from iNaturalist 
Photo: Patrick Alexander from Las Cruces, NM, CC0, from Wikimedia Commons 
Photo: Nathan Aaron, CC BY 4.0, from iNaturalist 
Photo: Patrick Alexander from Las Cruces, NM, CC0, from Wikimedia Commons 
Photo: Chet Burrier, CC BY 4.0, from iNaturalist 
Photo: Patrick Alexander from Las Cruces, NM, CC0, from Wikimedia Commons 
Photo: diana schwartz, CC BY 4.0, from iNaturalist 
Photo: Alan Weakley, CC0, from iNaturalist
More in Polygonella
- Florida jointweedPolygonella basiramiaPolygonaceae
- Small's jointweedPolygonella myriophyllaPolygonaceae
- Largeflower jointweedPolygonella robustaPolygonaceae
- Coastal jointweedPolygonella articulataPolygonaceae
- October flowerPolygonella polygamaPolygonaceae
- Sandhill jointweedPolygonella fimbriataPolygonaceae
- Tall jointweedPolygonella gracilisPolygonaceae
- Largeleaf jointweedPolygonella macrophyllaPolygonaceae
- Hairy jointweedPolygonella ciliataPolygonaceae
- Parks' jointweedPolygonella parksiiPolygonaceae
Sources: classification from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.