12cm, Alpine Skullcap is a beautiful perennial species with quite large flower with a violet-blue crown and lower white lip in spring and early summer. It is native of mountain meadows and rock crevices in European mountain ridges from the Pyreness to the Alps, Ventian mountains and mountains in the Balkans. Easily grown in any rich, well drained soil in a sunny spot. An excellent rock garden plant. V-VI.