This bachelor’s thesis is based on the charred archaeobotanical material from a settlement at Eikebakken, Norway dated to the end of Bronze Age. The study focuses on determining the potential use of weeds and the oil plant flax (Linum usitatissimum). The archaeobotanical samples contained large amounts of charred flax seeds, and to determine whether it was used for oil or textile production a morphometric study of the material was undertaken and compared to other morphometric studies from Northern Europe. An experiment on modern flax seeds, carbonised at different temperatures, was used to expand current knowledge about how flax seeds change through the carbonisation process and why flax seeds are so rarely preserved in prehistoric contexts. The experiment results compared to the carbonized flax seeds from Eikebakken are shown with different diagrams and visualisations. The morphometric analysis together with the experiment provides new knowledge about the flax seeds complications with preservation and that flax in Norway's earliest stages was most likely grown for textile fibres, a contradiction to earlier assumptions.