Canker - bacterial
Cultural measures: Cut out diseased branches afew inches below the infection as soon as diagnosis is confirmed. This should be carried out idealy in July/August when the tissue is most resistant to canker. This is also the best time of year to prune plum trees to avoid Silver Leaf.
Product Solution: Spray with Fruit and Vegetable Disease Control in late summer, autumn, apply Abrex Seal & Heal on the pruned sites.