Host Plants
confirmed
LikelyBox Elder
Acer negundo
Gray Alder
Alnus incana
Sunflower
Helianthus annuus
Quaking Aspen
Populus tremuloides
Chokecherry
Prunus virginiana
Western Hemlock
Tsuga heterophylla
Balsam Fir
Abies concolor
Grand Fir
Abies grandis
Balsam Fir
Abies magnifica
Vine Maple
Acer circinatum
Big Leaf Maple
Acer macrophyllum
California Buckeye
Aesculus californica
Mountain Alder
Alnus incana ssp. tenuifolia
White Alder
Alnus rhombifolia
Red Alder
Alnus rubra
Annual Bursage
Ambrosia acanthicarpa
Beach Bur
Ambrosia chamissonis
Western Ragweed
Ambrosia psilostachya
Western Serviceberry
Amelanchier alnifolia
Glabrous Serviceberry
Amelanchier alnifolia var. pumila
Pacific Serviceberry
Amelanchier alnifolia var. semiintegrifolia
Pale Serviceberry
Amelanchier pallida
Service Berry
Amelanchier utahensis
California False Indigo
Amorpha californica
Napa False Indigo
Amorpha californica var. napensis
Water Birch
Betula occidentalis
Spice Bush
Calycanthus occidentalis
Mountain Whitethorn
Ceanothus cordulatus
Buckbrush
Ceanothus cuneatus
Buckbrush
Ceanothus cuneatus var. cuneatus
Buckbrush
Ceanothus cuneatus var. ramulosus
Sandscrub Ceanothus
Ceanothus dentatus
Calistoga Ceanothus
Ceanothus divergens
Wavy Leaved Ceanothus
Ceanothus foliosus
Wavy Leaved Ceanothus
Ceanothus foliosus var. foliosus
Vine Hill Ceanothus
Ceanothus foliosus var. vineatus
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
Lemmon's Ceanothus
Ceanothus lemmonii
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
Dwarf Ceanothus
Ceanothus pumilus
Blueblossom Ceanothus
Ceanothus thyrsiflorus
Carmel Ceanothus
Ceanothus thyrsiflorus var. griseus
Creeping Blueblossom
Ceanothus thyrsiflorus var. thyrsiflorus
Woollyleaf Ceanothus
Ceanothus tomentosus
Tobacco Brush
Ceanothus velutinus
Sugarberry
Celtis laevigata