Forest pests & diseases PestsBark beetles attacking drought-stressed Douglas firsDouglas fir tussock mothPine engraver beetlesRed turpentine beetleSpruce budwormWestern pine beetle DiseasesDrought stress in conifersElytroderma Needle CastLaminated root rot—Douglas firPonderosa pine needle symptomsRedbandRhabdocline and Swiss Needle Cast
