This article analyzes the effectiveness of biopreparations derived from microorganisms in the cultivation of ornamental plants within the framework of extracurricular biology activities. The study aims to evaluate the pedagogical and biological significance of using environmentally friendly biopreparations to improve students’ practical skills, scientific thinking, and ecological awareness. The research was conducted based on experimental and observational methods, where ornamental plants were cultivated using microbial biopreparations under controlled conditions. Growth indicators, plant health, and resistance to diseases were compared with traditionally cultivated plants. The results demonstrate that biopreparations significantly enhance plant growth, improve soil fertility, and reduce the need for chemical fertilizers. In addition, integrating this topic into extracurricular activities contributes to the development of students’ research competencies, interest in biology, and understanding of sustainable agriculture. The findings confirm that the use of microorganism-based biopreparations is both biologically effective and pedagogically valuable in biology education.