Bacterial Canker
Pseudomonas syringae
bacterial disease.
Bacterial disease causing limb dieback and gummosis, particularly damaging in wet cool springs.
Biology and conditions
Detailed guidance for this section is being prepared. Check back soon.
Symptoms
- Sunken cankers with gum exudate
- Limb dieback
- Bud death and shoot blight
Controls
- Copper sprays in fall and dormant season
- Avoid pruning in wet weather
- Site selection (well-drained, less frost-pocket)
- Tolerant rootstocks