The spontaneously settling vegetation involvement in the sown grasses plant communities formation on the mine spoil. Fragmenta Floristica et Geobotanica Polonica 7: 215–227. Kraków. PL ISSN 1640–629X. ABSTRACT: During the four years long field experiment on various grasses cultivars sowing, the floristic investigation of the plants spontaneously settling the sward was carried out. The contribution of these plants to plants communities forming was determined.