A perennial herb occurring in damp or dry habitats including cultivated or waste ground, gardens, quarries, streamsides and woodland margins. It spreads by seed. Lowland.
The distribution of E. tetragonum in Britain remains stable and essentially southern, though it is now far better recorded. Many records have been made in Scotland since the 1962 Atlas, but none have been verified by expert examination and all have been treated as probable errors for E. obscurum or other species. It has increased in Ireland.
Eurosiberian Temperate element.
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.