Observational analysis highlights damage to terminal shoots in young western larch, indicating long-term concerns for regeneration.
Spruce budworm larvae are severing stems of terminal and lateral shoots of young western latch in some western Montana forests. Rapid juvenile height growth and excellent form—two highly desirable characteristics of larch—are jeopardized. Severance of terminal shoots is producing trees with multiple leaders and crooked boles. Severance of lateral shoots is less common and less serious. The long-range impact of this budworm damage on larch regeneration is being studied.
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Fellin et al. (1967) studied this question.
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