Drought is one of the major abiotic stresses impacting global agricultural productivity, and leafy vegetables are among the most vulnerable crops. In this study, we evaluated the effectiveness of a humic and fulvic acid-based biostimulant in enhancing the resilience of a widely consumed vegetable, bok choy (Brassica rapa subsp. chinensis) under drought condition. Humic and fulvic acid biostimulant-treated plants (AR10R1 group) and -untreated control plants (NT10R1 group) were subjected to a simulated prolonged severe drought condition in greenhouse setting. Growth metrics including shoot and root growth, number and size f leaves, and wet and dry biomass of above and below ground parts were quantified. The survival and recovery rates oftheexperimental plants were also assessed. Our results revealed significant differences (p 0.05) in nearly all plant growth metrics, as well as the survival and recovery outcomes between the two groups. The AR10R1 group showed superior growth, greater biomass accumulation, and substantially improved survival rate compared to the NT10R1 group under drought condition. Remarkably, the AR10R1 plants exhibited a recovery rate ten-fold higher than that of the NT10R1 plants. The biostimulant was applied before commencement of the drought experiment. This suggests that the biostimulant has a long-lasting effect, as it was able to alleviate drought-induced damage in the AR10R1 plants, enhancing their survival throughout the prolonged severe drought condition (10% soil moisture level for 20 days), and subsequently their recovery during the rehydration stage. Our study provides useful insights into the efficacy of humic and fulvic acid biostimulants in mitigating drought-induced stress in bok choy. We believe the integration of humic and fulvic acid-based biostimulant in agriculture is a promising and sustainable strategy to mitigate drought-induced yield losses in bok choy production, and it can potentially be optimized to enhance resilience in other leafy crops in the face of climate change.