Nezara viridula

What is a Green Vegetable Bug?

The green vegetable bug (AKA shield bug, or stink bug) is bright green in colour and about 1.5 cm long as an adult. It's mostly active in warm weather, during summer and autumn (but it does overwinter, so adults can be spotted throughout the year). 

Juvenile nymphs are more rounded in shape, and change colour as they moult, from orange to black and white, or black and red. 

The green vegetable bug sucks the sap from stalks and leaves and the juices from fruit. If disturbed, this pest emits an unpleasant chemical with a strong odour, which can stain fingers and clothes.

Green vegetable bug nymph


Wilting plant shoots, from sap loss. Fruit can become distorted and misshapen, especially beans. Hard corky growths can appear around where they've pierced the plant to feed.

Plants impacted

  • Beans
  • Tomatoes
  • Potatoes
  • Sweet Corn
  • Vine Crops
  • Grapes
  • Passionfruit
  • Tamarillos
  • Sunflowers
  • Other ornamentals

Green vegetable bug nymphs

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