An annual found in a wide array of open habitats, including dry grasslands, rock outcrops, cultivated land, garden lawns, verges and waste ground. Generally lowland, but reaching 550 m at Moor House (Westmorland).
There appears to have been little change in the distribution of this species since the 1962 Atlas.
European Southern-temperate element; widely naturalised outside its native range.
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.