A perennial herb which is naturalised as a garden escape in rough ground and in waste places. It also arises from wool shoddy. Lowland.
R. hirta was introduced into British gardens in 1714 and is extremely common as a garden plant. It was recorded in the wild in 1917 (N. Somerset) and may well be increasing.
Native of 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.