The paper presents the research results concerning the impact of the degree of crushing of dried herbs on the content of essential oils. Herbaceous waste from lemon balm, garden sage and camomile was used for the research. Raw material was divided into fractions with the use of a laboratory pneumatic separator LPS 200 MC. Dried herbs, which stayed at the sieve of meshes provided below, was selected for analysis: 100μm and 250μm. Determination of the content of essential oil in dried herbs was carried out according to the recommendations of a norm BN-88/8192-04. It was stated that the degree of crushing of herbs influences the content of essential oil. Higher values of essential oils were reported in a fraction of a lower degree of crushing. The obtained results prove that the obtained herb waste may be used for further processing into essential oils.