A bulbous perennial which was formerly grown as an ornamental. It is a weed of nurseries and gardens, from which it spreads to rubbish tips and other sites where garden refuse is dumped. It does not set seed, but spreads vigorously by easily detached bulblets that are resistant to all but the strongest herbicides. Lowland.
O. latifolia was recorded in the wild by 1921. It is less frost-hardy than the similar O. debilis, and was very considerably reduced in Guernsey in the severe 1962-3 winter, although it soon recovered (McClintock, 1975). Changes in its distribution cannot be readily assessed.
Native of S. & C. America; now a notorious agricultural weed of mild climates worldwide.
Count of 10km squares in Great Britain: 67
Count of 10km squares in Ireland: 1
Count of 10km squares in the Channel Isles: 11
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.