The goal of this book is to provide essential information on the use of different medicinal plants and their secondary metabolites for the treatment of various fungal diseases affecting human beings, animals and plants. It is divided in four parts: Part I examines the global distribution of plant-derived antifungal compounds, Part II deals with antifungal activities of plant metabolites, Part III includes plants used in Ayurveda and traditional systems for treating fungal diseases, and Part IV discusses the use of plant-derived products to protect plants against fungal diseases.