As flax is a crop for temperate regions and requires abundant moisture and cool weather during the growing season it meets proper Latvian climate conditions. Although climate conditions are favourable for flax cultivation in country, during last decades flax crop production was decreased fast. At the same time fibers crop production is an important key to the creation of employment in flax growing areas and the development of a sustainable economy of region as well an increasing interest in the use of bast fibers in different branches of economy are observed. The reintroduction of a crop in Latvia involves the question of quality and predictability, as well as the environmental conditions under which profitable production may be undertaken. Varieties enter into the quality and predictability of the crop. The object of our work has been to determine which of flax lines is most desirable from the standpoint of fiber production and determine predictability of agronomical, commercial and technological properties. In order to solve this problem, a comparative study of agronomical, commercial and technological properties of available flax lines cultivated in Agriculture Science Centre of Latgale at year 2010 was made following the routine methods and compared with the corresponding properties variety Vega 2 developed in Lithuania as a standard because no own Latvian flax varieties yet.