This perennial herb is occasionally recorded on rubbish tips, waste ground and as a relic of cultivation. Lowland.
H. tuberosus was cultivated in Britain by 1617 for its edible tubers, then known as `potatoes of Canada`, and is now grown in gardens. Although it flowers only after long hot summers, its tubers can survive as garden throw-outs, or plants can arise from bird-seed. It was known to occur in the wild by 1897, and is probably increasing.
Native of N. America.
Count of 10km squares in Great Britain: 156
Count of 10km squares in Ireland: 1
Count of 10km squares in the Channel Isles: 2
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.