The study was conducted to develop micropropagation and slow-growth conservation protocol for endangered relict plant species Campanula sclerophylla. The best multiplication rate up to 7.2 shoots per explant was obtained on half strength MS supplemented with 3 mg/l BAP and 1 mg/l IAA. The effects of temperature/light conditions, sorbitol and ABA on shoot growth of Campanula sclerophylla were studied. Addition of 3 g/l sorbitol and 5 mg/l ABA inhibited shoot length and multiplication of C. sclerophylla. Explants were stored for 9 months without subculture at 7ºС and light intensity of 23 lux.