WSU Extension

Hortsense

Maple
 
Disease
Anthracnose 
Bacterial leaf spot and dieback 
Fasciation 
Leaf scorch 
Nectria canker 
Phyllosticta leaf spot 
Powdery mildew 
Tar spots 
Verticillium wilt 
Insect
Aphids 
Cottony maple scale 
Maple bladdergall mite 



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Caption: Fasciation
Photo by: R.S. Byther
  
Maple : Fasciation
(revision date: 4/28/2014)


Biology
Fasciation is a plant deformity which results in abnormally flattened stems. It is the result of a mutation in the growing point of the stem and is not a disease. Instead of being round, affected stems are flat or ribbed in appearance, and may be bent or curved in odd patterns. The leaves produced on the flattened stems usually appear normal, but may be somewhat undersized. Usually only a portion of a plant displays fasciation. Although not contagious, fasciation may sometimes be spread by seeds or through propagation of affected plant parts.
Management Options


Non-Chemical Management
  • Prune out misshapen portions of affected plants.
  • Remove affected plants, if desired.
Select non-chemical management options as your first choice!

Chemical Management

None recommended

Images

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Caption: Fasciation
Photo by: R.S. Byther