Cucumber green mottle mosaic (CGMMV) (Tobamovirus Cucumber Green Mottle Mosaic Virus) is a viral pathogen of cucurbit. It was first detected in California in 1935.
The CGMMV is spread through infected seeds and soil. The virus can enter the plant through wounds or through root to root contact. Symptoms vary between strains of the virus, but can range from light yellow spots and vein clearing on young leaves, to chlorotic mottling, plant stunting and necrosis on older plants. Once a plant is infected, there is no known cure, therefore the best management method is to prevent the infection of the virus.