Information on Cucumber
Green Mottle Mosaic Virus (CGMMV)

CGMMV, originally described in 1935, was first reported in the U.S. in a melon seed production field in California in the summer of 2013. If was detected again in California in 2014 in a commercial seedless watermelon field, but has not been reported elsewhere in the U.S. The disease has long been known in Europe, Asia, the Middle East, and more recently in Canada. CGMMV is a member of the genus Tobamovirus, which also includes the well-known Tobacco mosaic virus (TMV). It has a narrow host range that is primarily limited to cucurbit species, including watermelon, melon, cucumber and rootstock.

Click on the links below to learn more about CGMMV.

Fact Sheet

CGMMV Brochure English *NEW 2018

CGMMV Brochure Spanish *NEW 2018

March 2018 Workshop Presentations
1. Welcome, Overview and History
2. CGMMV Training Session
3. Identification Cards
4. Best Management Pactices
5. NSHAPP Overview
6. Plans for Proposed Research


CGMMV Interactive Workshop Agenda

CGMMV Interactive Workshop Questions


March 2015 Workshop: Impacts on California Cucurbit Producers

March 2015 Workshop: A Cucurbit Infecting Virus New to North America