Citrus Gall Wasp

Citrus Gall Wasp, a pest of Citrus trees in commercial orchards and home gardens, arrived in WA in 2013 and is spreading rapidly. This wasp poses a threat to the citrus industry in WA. 

The Department of Primary Industries and Regional Development (DPIRD) require residents assistance to reduce the threat to the citrus industry in WA and advises that citrus tree owners can implement control measures on their property such as:

  • Check for galls from April to June
  • Prune-out galls by June 30 and place them in the sun to dry out (large galls should be chopped up)
  • Galls removed after June 30 must be chopped up and solarised (in a plastic bag) in a sunny location for at least four weeks to kill developing larvae
  • Don't move plants between properties, don't leave galls on the tree or throw galls in rubbish without treatment
  • Report citrus gall wasps using this link

For more information visit the DPIRD website or visit here for a factsheet on citrus gall wasps.