Scilla Siberica. Siberian squill is a tough little bulb that flowers very early in spring. Small linear green leaves emerge in late winter early spring. 1 to 3 small star shaped blue flowers on short stems in early spring. Best grown in large drifts to catch the eye. They will naturalise well over a few years. Plant in full sun well drained site to prevent root and bulb rot. 12cm by 30cm.