This research investigates the role of trees in grazed dairy systems, presenting comprehensive evidence on their positive impacts on ecosystem services valuable for farmers. The methodology involved a systematic review of existing studies, evaluating their contributions to natural capital and dairy productivity metrics. Key findings demonstrate that integrating trees enhances soil quality, forage nutritional value, and mitigates nutrient runoff, thereby supporting sustainability in dairy farming. Evidence shows that areas with trees indicated improved pasture quality and reduction in heat stress for cattle, leading to better performance and overall ecosystem health.