A compact, spreading plant with slightly hairy, toothed leaves which may be evergreen and emerge in spring on creeping stems which bear the flowers which are bell shaped, deep violet blue, and much larger than you may expect from a plant of this size. It will thrive on stony walls and places in full sun providing the soil does not dry out completely.
Seeds can be sown at any time but are best sown in winter or early spring to benefit from a cold spell in the wet compost to break their dormancy. We advise covering seeds very thinly with sand or fine grit to about the depth of the seed size. If the seeds do not come up within 6 to 12 weeks the damp seed tray can be given cold treatment in a fridge for about four weeks. They may still take very many months to appear, so please never discard the pot or tray.