Host Plants
confirmed
LikelyBox Elder
Acer negundo
Gray Alder
Alnus incana
Red Alder
Alnus rubra
Ponderosa Pine
Pinus ponderosa
Quaking Aspen
Populus tremuloides
Douglas Fir
Pseudotsuga menziesii
Russet Buffaloberry
Shepherdia canadensis
Western Red Cedar
Thuja plicata
Western Hemlock
Tsuga heterophylla
Vine Maple
Acer circinatum
Rocky Mountain Maple
Acer glabrum
Mountain Maple
Acer glabrum var. glabrum
Big Leaf Maple
Acer macrophyllum
Mountain Alder
Alnus incana ssp. tenuifolia
White Alder
Alnus rhombifolia
Procumbent Pigweed
Amaranthus blitoides
Californian Amaranth
Amaranthus californicus
Fringed Amaranth
Amaranthus fimbriatus
Palmer's Amaranth
Amaranthus palmeri
Powell's Amaranth
Amaranthus powellii
Saltmarsh Baccharis
Baccharis glutinosa
Malibu Baccharis
Baccharis malibuensis
Coyote Bush
Baccharis pilularis
Coyote Brush
Baccharis pilularis ssp. consanguinea
Plummer's Baccharis
Baccharis plummerae
Plummer's Baccharis
Baccharis plummerae ssp. plummerae
Mulefat
Baccharis salicifolia
Mule Fat
Baccharis salicifolia ssp. salicifolia
Emory's Baccharis
Baccharis salicina
Broom Baccharis
Baccharis sarothroides
Desert Baccharis
Baccharis sergiloides
Encinitas Baccharis
Baccharis vanessae
Water Birch
Betula occidentalis
Arching Ceanothus
Ceanothus arcuatus
Mountain Whitethorn
Ceanothus cordulatus
Hoaryleaf Ceanothus
Ceanothus crassifolius
Hoary Leaved Ceanothus
Ceanothus crassifolius var. crassifolius
Buckbrush
Ceanothus cuneatus
Buckbrush
Ceanothus cuneatus var. cuneatus
Lompoc Ceanothus
Ceanothus cuneatus var. fascicularis
Buckbrush
Ceanothus cuneatus var. ramulosus
San Diego Ceanothus
Ceanothus cyaneus
Sandscrub Ceanothus
Ceanothus dentatus
Pine Mat
Ceanothus diversifolius
Wavy Leaved Ceanothus
Ceanothus foliosus
Wavy Leaved Ceanothus
Ceanothus foliosus var. foliosus
La Cuesta Ceanothus
Ceanothus foliosus var. medius
Fresno Ceanothus
Ceanothus fresnensis
Desert Ceanothus
Ceanothus greggii
Santa Barbara Ceanothus
Ceanothus impressus
Santa Barbara Ceanothus
Ceanothus impressus var. impressus
Nipomo Mesa Ceanothus
Ceanothus impressus var. nipomensis
Coast Whitethorn
Ceanothus incanus
Deerbrush
Ceanothus integerrimus
Deerbrush
Ceanothus integerrimus var. macrothyrsus
Lemmon's Ceanothus
Ceanothus lemmonii
Chaparral Whitethorn
Ceanothus leucodermis
Big Pod Ceanothus
Ceanothus megacarpus
Bigpod Ceanothus
Ceanothus megacarpus var. megacarpus
Hairy Ceanothus
Ceanothus oliganthus