A large herbaceous perennial found as a naturalised garden escape in woodland and on roadsides, river banks and by paths. Lowland.
This species was introduced into British gardens in 1804. It was known from the wild by 1908.
Native of E. Asia and N. America.
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.