Exotic Pest Alert: Citrus canker


Citrus canker is a highly contagious bacterial disease caused by Xanthomonas citri subsp. citri (former name Xanthomonas axonopodis pv. citri).

All above-ground parts of citrus trees can be affected. Severe infection can lead to defoliation, dieback, blemished fruit and premature fruit drop.

Citrus canker is a plant disease and is not harmful to people or animals.

Some of the topics covered by this factsheet include:

  • Symptoms
  • Hosts
  • Lifecycle
  • Spread and movement
  • Control
  • Reporting


Factsheet 1183 First Edition

Published: Apr 2012