An annual occurring as a garden escape or throw-out on rubbish tips and waste places. It is usually casual, but may persist for a few years in disturbed, open sites, reproducing by seed. Lowland.
This attractive species has been cultivated in Britain since before 1800. It was recorded from the wild by 1840, and its overall distribution is stable.
Native of the southern part of the European Temperate zone; it is naturalised further north in Europe and elsewhere.
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