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: