The paper demonstrates the research results of a three-year field experiment performed in the Botanical Garden of the Plant Breeding and Acclimatization Institute (IHAR) in Bydgoszcz. Three mixtures of lawn turf grasses were evaluated. The first mixture (M I) components included Festuca rubra (75%) and Lolium perenne (25%). The second mixture (M II) was composed of Festuca arundinacea (30%), Festuca ovina (50%) and  Lolium perenne (20%). The third mixture (M III) was made up of Festuca ovina (30%), Festuca rubra (35%) as well as Festuca heterophylla (35%). The grass root systems and other lawn characteristics were evaluated at three dates: in spring (May), in summer (July) and in autumn (October). The research showed that soil compaction decreased the root weight significantly, as compared with the control treatments. Higher aboveground mass yields, both in the form of stubble and mowed green matter, except for mixture MII, were recorded for the control treatments; the highest values for mixture M I and the lowest – for mixture M III. The decrease in root length was more varied, with a positive response to soil compaction in the form of increased grass root length being reported for M II. Soil compaction showed a negative impact on the overall value of the lawn and the turfing level of the lawn areas evaluated.