Michigan State University Extension
Ornamental Plants plus Version 2.0 - 00000271
01/01/98

CAMPANULA DISEASE PROBLEMS

Crown rot kills plants when weather conditions are moist    
and temperatures are above 60 degrees.  Avoid infested      
soil.  The disease is caused by Pellicularia rolfsii and    
no chemical control is available.                           

Leaf spot diseases may disfigure the leaves but no          
chemical controls are suggested.                            

Rust covers the undersides of leaves with orange or         
reddish brown pustules.  The leaves will dry and the        
plants are stunted.                                         

Powdery mildew causes a white powdery growth on the         
leaves.                                                     

Root rot causes root decay and in wet weather a cobwebby    
growth develops on the lower stems.  The lower leaves rot   
and upper parts of the plant wilt and die.  Remove          
infected plants.  No chemical control is listed for this    
disease caused by Pellicularia filamentosa.                 

Verticillium wilt may also attack Campanula.  No chemical   
control is available.                                       

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