Michigan State University Extension
Ornamental Plants plus Version 2.0 - 00001238
01/01/98

RHODODENDRON INSECT PROBLEMS

Black vine weevil and strawberry weevil adults feed at      
night, notching the leaf margins and making holes in the    
leaves.  The larvae feed on the roots and bark, girdling    
and killing the plant.                                      

Lace bugs cause leaf yellowing.  Brown specks on the        
undersides of leaves are insect excrement.  Sunny sites     
may lead to higher lace bug populations.                    

Mites cause leaf discoloration.                             

Scales may be found on branches and stems of                
unhealthy-looking plants.  The preferred method of control  
involves regular inspection for early detection of the      
infestation then spraying with dormant oil.                 

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