Skip to content

Cucumber virus alert

Karen OMalley, Horticulture Officer
It is really important local growers keep a look out for this, it has been devastating to NT growers!

Cucumber Green Mottle Mosaic Virus (CGMMV) was recently detected in watermelon crops in the Northern Territory. This is an exotic plant pest and a national biosecurity response is now occurring.

CGMMV is a plant disease that infects watermelon, cucumber, melons, zucchini, pumpkin, squash, bitter gourd, and bottle gourd. It is highly contagious and easily spread through a crop by plant contact, contaminated water, mechanical transfer, and even clothing and hands of workers pruning or moving in a crop.

The virus spreads to new areas through contaminated seed so it is important for NSW watermelon growers to be alert for symptoms of the disease as the season progresses. CGMMV causes extensive damage to the watermelon plants, resulting in substantial yield losses. CGMMV is not easy to control because it can survive in crop debris for many years.

Report incidences 

If you suspect CGMMV in your crop, please report it by calling the Exotic Plant Pest Hotline on 1800 084 881. Reports can also be sent to NSW DPI by emailing

If emailing, include photos of the suspect plants and symptoms.

If you are unsure whether the symptoms you might be seeing are CGMMV, email for assistance.

Help prevent the spread through on-farm biosecurity

The status of Cucumber Green Mottle Mosaic Virus (CGMMV) has changed from eradication to management, it is extremely import that growers maintain very tight on-farm biosecurity. CGMMV is easily transmitted from farm to farm.

Find out how to prevent the spread here.

More information
Karen OMalley
P. 0428 103 665