WSU Extension


Common Cultural Problems
Air pollution 
Construction damage 
Desiccating wind 
Drought damage 
Fertilizer burn 
Frost injury 
Hail damage 
Lime-induced chlorosis 
Marginal leaf necrosis 
Morphological changes 
Mosses and lichens 
Needle loss 
Needle tip necrosis 
Nutrient deficiency 
Overwatering or poor drainage 
Plant girdling and circling roots 
Poor pollination 
Salt damage 
Transplant shock 
Winter desiccation 
Winter injury 

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Caption: Fasciation
Photo by: R.S. Byther
Common Cultural : Fasciation
(revision date: 4/30/2013)

Fasciation occurs in many kinds of plants, both woody and nonwoody. Stem growth becomes flattened and often takes on a dramatic twisting due to changes in the genetics of the growing point (apical meristem). Fasciated stems have a ribbed appearance, as if several stems have been fused together laterally. Leaves are usually normal in shape but may be undersized. Grotesque bending and coiling of the stem tip may result from unequal elongation of tissues. Some mutations are stable, but often the growth will revert back to normal.
Management Options

Non-Chemical Management
  • Some plants are more prone to fasciation. In some cases, it may be a desirable horticultural attribute.
  • Remove undesired fasciated growth by pruning back to a normal section of the plant.
Select non-chemical management options as your first choice!

Chemical Management

None recommended


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Caption: Fasciation
Photo by: R.S. Byther
Caption: Fasciation on rhododendron
Photo by: C.R. Foss
Caption: Fasciation on strawberry
Photo by: B.M. Johnson