Miscanthus sinensis (Andersson) is a perennial grass producing high amounts of biomass. I It can be used for energetic purposes through burning or biogas production. A main problem in this crop cultivation consists in vegetative, expensive method of propagation. First preliminary research on seed quality improvement is carried out in order to enable propagation on a large scale. The object of presented experiment was to find out the reason for low germination ability and to search methods of seed quality improvement. Miscanthus seeds were treated with sodium hypochlorite, commercial micronutrients seed fertilizer and commercial bacteria seed treatment, ash and plasma. The ability and speed of germination and root and shoot length were measured. Tetrazolium test and microscopic observations of seeds were done. Fragility and susceptibility to damage and low vitality of embryos mean that further work is needed on the genetic characteristics and methods of seed harvesting as well as postharvest processing of this species.