| Added on 02/01/2012 | Pest/Disease |
Bacterial Canker of Cherry
Pseudomonas syringae
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Affects most Cherry varieties, Plum, Almond, Apricot and Peach (Prunus). The disease infects the leaves in Summer, gaining entry through stomata. A brown spot appears which dries and falls from the leaf to leave a circular hole. This is known as the "shot hole" symptom and is a good indicator for the disease.
During Autumn, the disease can enter the scars left by the falling leaves. They will also enter the bark through any natural bark openings, injuries or wounds made during pruning. Bark killing can cause large sunken cankers which, if they girdle the stem, can kill the branch completely.
Restrict pruning of infected trees to mid-summer.
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