Botrytis is a type of fungus that can affect various plants, particularly grapes. It thrives in humid conditions and can cause a disease known as "gray mold." While it can be harmful, in some cases, it can also be beneficial. For instance, when it affects grapes under specific conditions, it leads to the production of noble rot, which is essential for making sweet wines like Sauternes. Farmers and winemakers must carefully manage Botrytis to protect their crops. Good air circulation and proper vineyard practices can help prevent its spread. Understanding this fungus is crucial for those in agriculture, especially in the wine industry, where it can significantly impact the quality of the harvest.