Host Plants
confirmed
LikelyWater Birch
Betula occidentalis
Buckbrush
Ceanothus cuneatus
Red Osier Dogwood
Cornus sericea
Quaking Aspen
Populus tremuloides
Chokecherry
Prunus virginiana
Arroyo Willow
Salix lasiolepis
Gray Alder
Alnus incana
Mountain Alder
Alnus incana ssp. tenuifolia
White Alder
Alnus rhombifolia
Red Alder
Alnus rubra
Hoaryleaf Ceanothus
Ceanothus crassifolius
Buckbrush
Ceanothus cuneatus var. cuneatus
Buckbrush
Ceanothus cuneatus var. ramulosus
Sandscrub Ceanothus
Ceanothus dentatus
Calistoga Ceanothus
Ceanothus divergens
Coyote Ceanothus
Ceanothus ferrisiae
Wavy Leaved Ceanothus
Ceanothus foliosus
Wavy Leaved Ceanothus
Ceanothus foliosus var. foliosus
Point Reyes Ceanothus
Ceanothus gloriosus
Glory Brush
Ceanothus gloriosus var. exaltatus
Point Reyes Ceanothus
Ceanothus gloriosus var. gloriosus
Mt. Vision Ceanothus
Ceanothus gloriosus var. porrectus
Coast Whitethorn
Ceanothus incanus
Deerbrush
Ceanothus integerrimus
Jepson Ceanothus
Ceanothus jepsonii
Chaparral Whitethorn
Ceanothus leucodermis
Mason's Ceanothus
Ceanothus masonii
Hairy Ceanothus
Ceanothus oliganthus
Jim Brush
Ceanothus oliganthus var. sorediatus
Palmer Lilac
Ceanothus palmeri
Wartleaf Ceanothus
Ceanothus papillosus
Parry Ceanothus
Ceanothus parryi
Pinemat
Ceanothus prostratus
Large Leaved Mahala Mat
Ceanothus prostratus var. prostratus
Monterey Ceanothus
Ceanothus rigidus
Blueblossom Ceanothus
Ceanothus thyrsiflorus
Carmel Ceanothus
Ceanothus thyrsiflorus var. griseus
Creeping Blueblossom
Ceanothus thyrsiflorus var. thyrsiflorus
Tobacco Brush
Ceanothus velutinus
Brown Dogwood
Cornus glabrata
Pacific Dogwood
Cornus nuttallii
Western Dogwood
Cornus sericea ssp. occidentalis
Creek Dogwood
Cornus sericea ssp. sericea
Pink Honeysuckle
Lonicera hispidula
Chaparral Honeysuckle
Lonicera interrupta
Black Twinberry
Lonicera involucrata
Twinberry Honeysuckle
Lonicera involucrata var. ledebourii
Southern Honeysuckle
Lonicera subspicata
Santa Barbara Honeysuckle
Lonicera subspicata var. denudata
Fremont Cottonwood
Populus fremontii
Fremont Cottonwood
Populus fremontii ssp. fremontii
Black Cottonwood
Populus trichocarpa
Desert Peach
Prunus andersonii
Bitter Cherry
Prunus emarginata
Hollyleaf Cherry
Prunus ilicifolia
Klamath Plum
Prunus subcordata
Western Chokecherry
Prunus virginiana var. demissa
Golden Currant
Ribes aureum
Golden Currant
Ribes aureum var. aureum
Golden Currant
Ribes aureum var. gracillimum