Clubroot fungus is a devastating plant disease caused by the soil-borne pathogen Plasmodiophora brassicae. It primarily affects members of the brassica family, such as cabbage, broccoli, and cauliflower, causing stunted growth and deformed roots. Synonyms for clubroot fungus include brassica clubroot, cabbage root disease, and clubfoot. Other terms used to describe the disease include "finger-and-toe" and "clubbed root." The disease can persist in soil for up to 20 years, making crop rotation essential for control. Various methods of management, such as soil amendments and resistant cultivars, can help to mitigate the impact of clubroot fungus on crop yields.