Erica Vale Seeds - Bells of Ireland Available Australia Wide When to sow Spring / Autumn Sowing Germination Some experience required (14-21 days) Description: Molucella Laevis. Annual - height 60-90cm. Superb cut flowers used fresh or dry. 60-90cm base-branching flower spikes are totally surrounded by the bell shaped green calyces that there is little room for leaves. A most unusual flower used extensively in arrangements. When to sow: Early Spring onward and again in Autumn.