Biology. Biology and life cycle. Ecology and epidemiology of Armillaria. Quantitative aspects of the epidemiology of Armillaria in the field. Diversity. Taxonomy, nomenclature and description of Armillaria. Molecular methods used for the detection and identification of Armillaria. Pathology. Pathogenicity. Control. The extent of losses and aims for managing Armillaria. Cultural methods to manage Armillaria. Chemical control of Armillaria. Biological and integrated control of Armillaria root rot. Future possibilities. Answering all the questions about Armillaria.