The paper presents results of research on quality characteristics of briquettes made from selected raw materials of plant origin. The following raw materials were used: corn straw, oat straw, and chamomile waste. Cereal straw was crushed using H 111/1 shredder equipped with a screen with a diameter of 20 mm. For the production of briquettes, a hydraulic piston briquetting machine of JUNIOR type from Deta Polska working at the pressure of 8 MPa, was used. The moisture, calorific value, granulometric composition, and compaction of raw materials as well as length, mass, bulk density and mechanical strength of the briquettes, were determined during the tests. Depending on the type of agglomerated raw material and its granulometric composition, the qualitative characteristics of briquettes varied. More advantageous features of briquettes were found in case of agglomeration of oat straw and chamomile waste, whereas less favorable for corn straw.