Three viruses are recorded infecting vegetable brassica crops in Western Australia, turnip mosaic virus, cauliflower mosaic virus, and beet western yellow virus. Occasionally, these three viruses cause significant economic loss but their occurrence is spasmodic. Vegetable brassica crops include cauliflower, broccoli, cabbage, Chinese cabbage, Brussels sprouts, radish, turnips, and swedes. This fact sheet details about three main virus diseases affecting vegetable brassicas – turnip mosaic virus, cauliflower mosaic virus, and beet western yellow virus – hosts, distribution, spread, symptoms, and control.