Soil-borne Arabis mosaic virus (AMV), which occurs naturally in various wild and cultivated plants (Murant, 1970), has also been found in ornamental bulbous crops, such as tulip, narcissus, hyacinth, crocus, and lily (Asjes, 1974). This paper now briefly reports on the symptoms associated with the incidental occurrence of AMV in primarily and secondarily infected tulips and on the diagnosis and control of infection.