An annual, occurring casually on tips and waste places, as a garden escape or bird-seed alien. Lowland.
R. sativus has been cultivated in gardens since at least 995 (Harvey, 1981); the white-rooted variety had been introduced from China by 1548. A variety of cultivars is grown in Britain, all of which are included on the map. The species was recorded from the wild by 1893.
Not known as a native wild plant; it doubtless developed in cultivation from the wild Raphanus taxa found in the Mediterranean region.
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.