In recent years, the cultivation of oilseed flax in Russia has a constant growth dynamics. To obtain a stable and guaranteed harvest of oilseed flax, it is necessary to choose the right variety, observe the cultivation technology, take into account the biological characteristics of the culture. The article considers the most important methods of flax cultivation and presents the ecological variety testing of oilseed flax, laid in the fields of the Siberian experimental station, where 14 varieties of oilseed flax, created in various scientific institutions of the country, were studied. The calculation of the cost of cultivation of commercial flax is presented, from all the above it can be concluded - if all the elements of flax cultivation technology are observed, with the correct selection of zoned varieties in Siberia, it is possible to obtain stable, high yields of oilseed flax.