Club root is a plant disease caused by a soil-borne pathogen called Plasmodiophora brassicae. This disease affects many cruciferous vegetables such as cabbage, broccoli, cauliflower, and Brussels sprouts. The main symptoms of club root are the formation of swollen, distorted roots, and stunted growth. There are some other synonyms for club root that refer to the same disease. These include cabbage root rot, brassica club root, and brassica root galls. Regardless of the term used, club root can cause severe crop damage and reduce yield, making it a significant concern for gardeners and farmers alike. To prevent club root, gardeners should focus on crop rotation, soil sterilization, and using resistant varieties.