The article presents the results of the study of age structure and density of natural populations of Bulbocodium versicolor (Ker-Gawl.) Spreng. in the Saratov region. The populations of B. versicolor show internal density fluctuations, and differences in density may be 2–5-fold in some years. It was found that the majority of the studied populations of B. versicolor are either juvenile or in the transition from the juvenile stage to maturity and vice versa. Only one population is mature.