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Host Plants

Flower name confirmed
Flower name Likely

Gray Alder

Alnus incana

Red Alder

Alnus rubra

Sitka Spruce

Picea sitchensis

Lodgepole Pine

Pinus contorta

Douglas Fir

Pseudotsuga menziesii

Western Red Cedar

Thuja plicata

Western Hemlock

Tsuga heterophylla

Pacific Silver Fir

Abies amabilis

Balsam Fir

Abies concolor

Grand Fir

Abies grandis

Balsam Fir

Abies magnifica

Shasta Red Fir

Abies magnifica var. shastensis

Mountain Alder

Alnus incana ssp. tenuifolia

White Alder

Alnus rhombifolia

Green Alder

Alnus viridis

Sitka Alder

Alnus viridis ssp. sinuata

Weeping Spruce

Picea breweriana

Engelmann Spruce

Picea engelmannii

Dwarf Pine

Pinus albicaulis

Knobcone Pine

Pinus attenuata

Bolander's Beach Pine

Pinus contorta ssp. bolanderi

Shore Pine

Pinus contorta ssp. contorta

Tamarack Pine

Pinus contorta ssp. murrayana

Jeffrey Pine

Pinus jeffreyi

Sugar Pine

Pinus lambertiana

Western White Pine

Pinus monticola

Bishop Pine

Pinus muricata

Ponderosa Pine

Pinus ponderosa

Monterey Pine

Pinus radiata

Foothill Pine

Pinus sabiniana

Coast Douglas Fir

Pseudotsuga menziesii var. menziesii

Mountain Hemlock

Tsuga mertensiana

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