WSU Extension

Hortsense

Filbert
 
Disease
Bacterial blight 
Eastern filbert blight 
Powdery mildew 
Insect
Apple mealybug 
Brown marmorated stink bug 
Filbert aphid 
Filbert bud mite 
Filbert leafroller 
Filbertworm 
Lecanium scale 
Omnivorous leaftier 
Tent caterpillars 



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Caption: Filbert bud mite damage
Photo by: R.S. Byther
  
Filbert : Filbert bud mite
(revision date: 5/20/2014)


Biology
Filbert bud mites are tiny eriophyid mites which feed in the leaf and flower buds. The mites are yellowish and sausage-shaped and are difficult to see with the unaided eye. Mite feeding causes the buds to thicken and enlarge, resulting in a condition called "big bud". The swollen, infested buds fail to grow normally and do not produce fruit. The buds turn dark reddish-brown as they mature.
Management Options


Non-Chemical Management
  • Plant "tight-budded" varieties such as 'Barcelona', which are less susceptible to bud mite attack. Loose-budded varieties such as 'Daviana' and 'Royal' are more susceptible.
Select non-chemical management options as your first choice!

Chemical Management

None recommended

Images

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Caption: Filbert bud mite damage
Photo by: R.S. Byther
Caption: Filbert bud mites
Photo by: R.S. Byther