Campanula pulla

Pulla means very dark. From the alps of Austria  this is an excellent alpine campanula. Slow to spread, not good in a pot. Prefers a little lime. Best to divide in spring to keep it going, some would say it can flower itself to death. A strong-growing, mat-forming perennial to 3cm, with spreading rhizomes, small, mid-green rounded, toothed leaves and deep purple-blue bell-shaped flowers in spring and early summer, only 10cm high with flowers and a bit wider. I missed the prime flowering for a photo, but this is a wee gem best in sun or part shade, moist but free draining. Dies back in winter. Mark the spot so not to disturb it. Seed needs a winter chill, like most campanula so autumn sow or give a few weeks cold treatment.