A rhizomatous perennial herb of moisture-retentive rough grassland, open damp woodland and waste ground. I. sibirica is often long-lived when discarded from gardens into suitable habitats, where it sometimes spreads by seed. Lowland.
I. sibirica was being cultivated in British gardens by 1596, and was recorded from the wild by 1928. Its popularity and ease of growth appear to be responsible for a steady increase in records since then.
Native of C. & E. Europe and W. Asia.
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.