General Information

Galls caused by bacteria are a very small but important group of bacterial plant pathogens. The most common is crown gall (Agrobactrium tumefaciens) which 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.

Other images

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