Leaves are 2.5 to 4.0 centimetres long. It grows shoots along the ground, about 20 to 25 cm long, which then turn upward, placing the flowers about 10 cm above ground. Flowers are light blue and bell shaped.

Often encountered as a garden escape and near to habitation, finding spots where it can tuck itself into cracks and crevices to survive.

May to September.

Semi evergreen perennial.

Widespread casual garden escape in England and Wales, less frequent in Scotland.

Little recorded in Leicestershire and Rutland. It was not recorded in the 1979 Flora survey of Leicestershire.