The caterpillars rather than the moths are what feed on and damage fir trees ... caterpillars also makes Douglas firs more ...

To date, the oldest CMT recorded is a western redcedar that had its bark removed in AD 1415. Until relatively recently, Douglas-fir CMTs were not known to archaeologists. In part, this is because old ...

The western spruce budworm primarily affects Douglas-fir, true fir and Engelmann spruce trees. Consecutive years of budworm defoliation leave drought-stressed trees susceptible to attacks by bark ...