Bacterial galls
Galls caused by bacteria is a very small but important group of bacterial plant pathogens. Most common is crown gall (Agrobactrium tumefaciens) that affects over 40 families of plants. Cane gall of brambles and hairy root of apple are also caused by bacteria. Control is the same as for crown gall.
Specific diseases

Other images

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Blight and gall-like growths on rosemary (Rosmarinus officinalus) possibly caused by Pseudomonas syringae
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Numerous gall-like growths on rosemary (Rosmarinus officinalus) possibly caused by Pseudomonas syringae
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