The field experiment carried out in 2000–2002 was set on lessive sandy loam soil by means of split-plot method in four replications (plots 10 m2). In the experiment there were compared two methods of propagation: from seeds and seedlings. In both methods there were two row spacings applied – traditional single rows 40 cm apart and double rows alternately 20 and 40 cm spaced. Dandelion propagated from the seedlings gave a significantly higher root yield than that from seeds sown directly to the soil. Furthermore, an additional increase of yield was found in objects where double row spacing was applied as compared with single one, recommended in practice. The highest yields of raw material (roots) and inulin per area unit were achieved from the plots where seedlings were planted out in double row spacing (by 52% and 40%, respectively, in relation to the control object – seeds sown in single rows).