Citrus canker is a bacterial disease of citrus that causes premature leaf and fruit drop.
Citrus canker is highly contagious and can be spread rapidly by:
- Windborne rain
- Lawnmowers and other landscaping equipment
- People carrying the infection on their hands, clothing, or equipment
moving infected or exposed plants or plant parts
What does citrus canker look like?
Symptoms on leaves and fruit are brown, raised lesions surrounded by an oily, water-soaked margin and a yellow ring or halo. Old lesions in leaves may fall out, creating a shot-hole effect.