Rumex obtusifolius

Tracheophyta MagnoliopsidaPolygonaceaeRumexRumex obtusifolius


A perennial herb of field margins, hedge banks, roadsides, stream and river banks, ditches and neglected cultivated ground. Mostly lowland, up to 565 m on Dent Crag (Westmorland), but with an exceptional record at 845 m on Great Dun Fell (Westmorland).



World Distribution

European Temperate element; widely naturalised outside its native range.

Broad Habitats

Light (Ellenberg): 7

Moisture (Ellenberg): 5

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 9


Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.6

July Mean Temperature (Celsius): 14.5

Annual Precipitation (mm): 1100

Life form information

Height (cm): 100

Perennation - primary


Life Form - primary




Clonality - primary

Little or no vegetative spread

Distribution information

Count of 10km squares in Great Britain: 2746

Count of 10km squares in Ireland: 973

Count of 10km squares in the Channel Isles: 14

Atlas Change Index: 0.66

Weighted Changed Factor: -8

Weighted Change Factor Confidence (90%)


Distribution information

JNCC Designations


PLANTATT - Attributes of British and Irish plants. (.zip 1455KB) This dataset was compiled and published in 2004, and last updated in November 2008. Download includes an Excel spreadsheet of the attributes, and a PDF explaining the background and nomenclature. Note that the PDF version is the booklet as published, whereas the Excel spreadsheet incorporates subsequent corrections. A hardcopy can be purchased from the Centre for Ecology and Hydrology.