Pest description and crop damage Small, brownish cream larvae of shoot moths bore into fresh green cones. May also bore into trunk cambium, branches, and shoots.
See "Spruce" in:
Spray cones or entire tree when cones become pendant.
For more information
Johnson, W.T. and H.H. Lyon (1991), Insects That Feed on Trees and Shrubs, 2nd ed., Cornell University Press (p. 48-50).