Michigan State University Extension
Ornamental Plants plus Version 2.0 - 00000695
01/01/98

HAMAMELIS INSECT PROBLEMS

Saddled prominent is a green to brown or yellow             
caterpillar with a reddish brown spot on its back.  It      
eats the leaves.  No chemicals are listed because           
outbreaks of the insect are short-lived.  At other times    
it is very rare.                                            

Witchhazel leaf gall aphid causes galls 1/2 inch long.      
The galls are green, sometimes with reddish tips, and are   
formed on the upper leaf surfaces.  Natural enemies         
usually control this insect; hand picking and destroying    
infested leaves will also be helpful.                       

The spiny witchhazel gall aphid causes galls 3/4 inch long  
with long, coarse spines.  The galls are green tinged with  
red.  Both this aphid and the previous one migrate to       
birch for part of their life cycle.                         

Eastern tent caterpillar feeds on witchhazel leaves.        
Removing the nest by hand will control the infestation.     

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