Polygonaceae
Hairy jointweed
Polygonella ciliata
- Family
- Polygonaceae
- Genus
- Polygonella
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Common names
By language (1)
- English
- Hairy jointweed
Flowers
- In flower
- September to January (from 45 flowering iNaturalist observations worldwide)
Characteristics
- Growth habit
- Forb/herb, Subshrub
- Lifespan
- Annual
- In the US and Canada
- Lower 48 states: native
Photos
FlowerPhoto: Jay Horn, CC BY 4.0, from iNaturalist 
FlowerPhoto: Troy Lamb, CC BY 4.0, from iNaturalist 
FlowerPhoto: James Hardee, CC BY 4.0, from iNaturalist 
FlowerPhoto: naturedom12, CC0, from iNaturalist 
Photo: DouglasGoldman, CC BY-SA 4.0, from Wikimedia Commons 
Photo: DouglasGoldman, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Theo Summer, CC0, from iNaturalist 
Photo: DouglasGoldman, CC BY-SA 4.0, from Wikimedia Commons 
Photo: James Hardee, CC BY 4.0, from iNaturalist 
Photo: DouglasGoldman, CC BY-SA 4.0, from Wikimedia Commons 
Photo: James Hardee, CC BY 4.0, from iNaturalist 
Photo: DouglasGoldman, CC BY-SA 4.0, from Wikimedia Commons
More in Polygonella
- Southern jointweedPolygonella americanaPolygonaceae
- 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
- 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.