WSU Extension


Caption: Coneworm on pine
Photo by: K. Grey
print version| pdf version| email url    

Spruce : Coneworms
(revision date: 4/20/2015)

Coneworms attack the green cones of spruce by burrowing into them and feeding. They may also bore into shoot tips, causing tip dieback, or feed on the soft bark of young growth. The coneworms are small and creamy or light brown in color with a darker head. The adult coneworm is a mottled gray moth. Coneworms also attack pines, hemlocks, true firs, and Douglas fir.
Management Options

Non-Chemical Management
  • Remove and destroy infested cones when possible.
  • Plant non-susceptible conifers where coneworms are a serious pest.
  • Natural enemies of the coneworm are likely.
Select non-chemical management options as your first choice!

Chemical Management

None recommended

    - hide images

+ Show larger images

Caption: Coneworm on pine
Photo by: K. Grey
Caption: Coneworm damage
Photo by: L.J. du Toit