Host Plants
confirmed
LikelyGray Alder
Alnus incana
Red Alder
Alnus rubra
Red Osier Dogwood
Cornus sericea
Douglas Fir
Pseudotsuga menziesii
Western Bracken Fern
Pteridium aquilinum
Western Hemlock
Tsuga heterophylla
White Alder
Alnus rhombifolia
Brown Dogwood
Cornus glabrata
Pacific Dogwood
Cornus nuttallii
Western Dogwood
Cornus sericea ssp. occidentalis
Creek Dogwood
Cornus sericea ssp. sericea
Sunflower
Helianthus annuus
Serpentine Sunflower
Helianthus bolanderi
California Sunflower
Helianthus californicus
Nuttall's Sunflower
Helianthus nuttallii
Los Angeles Sunflower
Helianthus nuttallii ssp. parishii
False Lily Of The Vally
Maianthemum dilatatum
Large False Solomon's Seal
Maianthemum racemosum
False Solomon Seal
Maianthemum stellatum
Field Mint
Mentha arvensis
American Cornmint
Mentha canadensis
Coast Douglas Fir
Pseudotsuga menziesii var. menziesii
Hairy Brackenfern
Pteridium aquilinum var. pubescens
Sandbar Willow
Salix exigua
Sandbar Willow
Salix exigua var. hindsiana
Goodding's Black Willow
Salix gooddingii
Coastal Willow
Salix hookeriana
Red Willow
Salix laevigata
Shining Willow
Salix lasiandra
Yellow Willow
Salix lasiandra var. lasiandra
Arroyo Willow
Salix lasiolepis
Yellow Willow
Salix lutea
Dusky Willow
Salix melanopsis
Scouler's Willow
Salix scouleriana
Sitka Willow
Salix sitchensis
Tracy's Willow
Salix tracyi
Blue Elderberry
Sambucus mexicana
Black Elderberry
Sambucus nigra
Red Elderberry
Sambucus racemosa
Mountain Red Elderberry
Sambucus racemosa var. racemosa
Giant White Wakerobin
Trillium albidum
Giant Wakerobin
Trillium chloropetalum
Western Trillium
Trillium ovatum
Common Nettle
Urtica dioica
California Nettle
Urtica dioica ssp. gracilis
Hoary Nettle
Urtica dioica ssp. holosericea
Common Viburnum
Viburnum ellipticum
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