A perennial herb, found as a garden escape which can become established on lane banks, cliffs, walls, rocky places, stone steps and in churchyards. Lowland.
S. sexangulare was recorded in the wild by 1763 and has been known from Wick Rocks, Bristol (W. Gloucs.) since at least 1869. It is now only infrequently grown in gardens.
A European Temperate species, with a distribution centred in C. Europe but extending locally east to Ukraine.
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Atlas text references
1986. Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Jalas & Suominen (1999)
1965. Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols.
1912. The Flora of Bristol.