WSU Extension


Caption: Apple mosaic virus
Photo by: R.S. Byther
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Pear : Virus diseases
(revision date: 5/20/2014)

Virus diseases of pears in home orchards seldom cause significant problems. Symptoms of common viruses are seen on bark, leaves, and fruit. Some virus diseases may cause bark to appear roughened or blistered. Most common virus diseases of pears are transmitted by grafting or other mechanical means. For more information on stony pit virus, see Pear: Stony pit virus.
Management Options

Non-Chemical Management
  • Plant only certified virus-free stock.
  • Do not perform grafts with wood from infected trees.
  • Remove and destroy severely affected trees, if desired.
Select non-chemical management options as your first choice!

Chemical Management

None recommended

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Caption: Apple mosaic virus
Photo by: R.S. Byther
Caption: Pear stony pit virus symptoms
Photo by: R.S. Byther