Celery mosaic virus (CeMV) causes a serious disease of celery worldwide. It also infects other members of the plant family it belongs to (Apiaciae) including aniseed, caraway, carrot, celery, celeraic, chervil, coriander, dill, parsley, parsnip, and poison hemlock. However, its principal host is celery. This fact sheet provides an overview of celery mosaic virus, hosts, distribution, symptoms and yield loss, spread, and control.