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Bacterial Canker


Bacterial Canker

Usually appear in

All Seasons

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Caused By:-     The Fungi Pseudomonas prunorum or syringae


Areas of bark may flatten and sink inwards. The damage areas may ooze resin. Affected branches may not open buds or if they do they wither and die soon after opening. leaves may not develop properly due to lack of nutrients and may yellow prematurely. Prunus is the main species affected. Picture by University of Georgia Plant Pathology Archive, University of Georgia,
See these other Cankers Apple and Pear, Bleeding, Canker, Cytospora, European, Horse Chestnut Bleeding, Mulberry, Parsnip, Pear and Apple, Phomopsis, Poplar Bacterial, Rose Stem and Dieback, Willow Black.


Prune out damaged areas and spray with copper based fungicide like Bordeaux mixture. Sprays should be applied several times of the year. A winter tar wash or spraying with Jayes fluid may help.

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