A vigorous perennial herb, spreading by rhizomes and frequently naturalised on roadsides, railway banks and in other waste places. Mainly lowland, reaching 380 m at Garrigill (Cumberland).
This species was introduced to cultivation in Britain before 1596; it is widely grown in gardens and was known from the wild by 1888. It was not mapped in the 1962 Atlas, but it is probably spreading. It is very persistent, and many populations are long-established.
Native of the mountains of C. and S. Europe.
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.