Traditionally known as "Worry-Free Grass," Daylily is now scientifically validated as a powerful ingredient for emotional wellness. Groundbreaking research reveals its extract works through the microbiota-gut-brain axis, reshaping the gut microbiome by boosting beneficial Bacteroides (GABA producers) and inhibiting harmful Desulfovibrio. This action reduces inflammation and promotes calmness. The key active compound, Rutin, is identified as a core contributor with direct antidepressant and neuroprotective effects. Ideal for next-generation functional foods and supplements, high-quality Daylily flower extract offers a natural, evidence-based solution for mood support, stress relief, and cognitive health products.