Rumex obtusifolius
Family: polygonaceae
Common name(s): Bitter Dock
Hardiness ratings: USDA zone 4 - 10 
General resources
Links for Rumex obtusifolius
- Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 4-10a)
 (6 photos)
- Garden.org - Community-assembled plant profile (7 photos)
- Illinois Wildflowers - Informative illustrated page with description and cultivation details, also covering range and faunal associations. (3 photos)
- Missouri Plants - Description and photographs of botanical features, with notes about habitat and native status. (11 photos)
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