A perennial herb found as a naturalised garden escape on roadsides and waste ground. Reproduction is by seed. Lowland.
G. psilostemon was introduced into cultivation in Britain in 1874, and is now very popular in gardens. It was recorded from the wild in 1966 (E. Ross).
Native of N.E. Turkey and the Caucasus.
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.