Multiple modes, multiple rates and multiple species. Which combination is a winner? Plant growth regulators (PGRs) are marketed to farmers as agronomic tools to decrease stem growth, improve standability and increase yield. In addition, PGRs can occasionally extend days to maturity, reduce test weight, reduce thousand kernel weight and possibly reduce grain protein content. But many factors contribute to a farmer’s decision to use PGRs, and their efficacy is influenced by other agronomic management decisions. This combined presentation will provide a deep dive into PGRs in various crops, including wheat, barley and oats, and provide data from recent studies conducted in Alberta and Manitoba.