This research investigated fungal diseases affecting morel mushroom cultivation in China, identifying the main pathogen responsible for crop losses. The findings are significant for commercial mushroom growers and the agricultural industry. Impacts on everyday life: • Helps protect the supply and affordability of morel mushrooms for consumers • Improves food security by reducing crop losses in mushroom farming • Supports the livelihoods of mushroom farmers through better disease management • Contributes to more sustainable agricultural practices • Enables better quality control in commercial mushroom production