Caterpillar Host Plants

Listed alphabetically by their latin name.
[ A ] [ B ] [ C ] [ D ] [ E ] [ F ] [ G ] [ H ] [ I ] [ J ] [ K ] [ L ]
[ M ] [ N ] [ O ] [ P ] [ Q ] [ R ] [ S ] [ T ] [ U ] [ V ] [ WXYZ ]

Abies species TRUE FIRS (Pine White)

Abutilon FLOWERING MAPLE (Common Checkered-Skipper)

Agropyron WHEAT GRASS (Woodland Skipper)

Agrostis BENT GRASS (Common Roadside-Skipper)

Alnus rubra RED ALDER (Pale Swallowtail, Green Comma)

Althea HOLLYHOCK (Painted Lady, West Coast Lady, Common Checkered-Skipper)

Amaranthus AMARANTHS (Common Sootywing)

Amorpha species FALSE INDIGO (Silver-spotted Skipper)

Anaphalis margaritacea PEARLY EVERLASTING (American Lady)

Andropogon BEARD GRASS (Common Branded Skipper)

Androsace septentionalis (Arctic Blue)

Antennaria plantaginifolia PLANTAIN-LEAVED PUSSY TOES (American Lady)

Apiaceae species PARSLEY (Old World Swallowtail, Anise Swallowtail, Indra Swallowtail)

Arbutus (Brown Elfin)

Arceuthobium campylopodum DWARF MISTLETOE (Thicket Hairstreak, Johnson's Hairstreak)

Arctium BURDOCK (American Lady)

Arctostaphylos uva-ursi KINNIKINICK (Hoary Elfin)

Artemisia WORMWOOD (American Lady)

Artemisia arctica (Old World Swallowtail)

Asclepius incarnata BUTTERFLY WEED (Monarch)

A. speciosa (Monarch)
A. syriaca (Monarch)

Asters (Old World Swallowtail, Hoffman's Checkerspot, Field Crescent)

Astragalus tridactylicus MILK VETCH (Western-tailed Blue, Arrowhead Blue, Silvery Blue, Northern Blue, Acmon Blue)

Avena WILD OATS (Common Roadside-Skipper)

Besseya (Variable Checkerspot)

Betula species BIRCH (Dreamy Duskywing)

B. lenta BLACK BIRCH (Green Comma)
B. papyrifera PAPER BIRCH (Compton Tortoiseshell, Mourning Cloak)
B. populifolia GRAY BIRCH (Compton Tortoiseshell)

Boehmeria cylindrica FALSE NETTLE (Red Admiral)

Bromus rubens (Juba Skipper, Common Branded Skipper)

Calamagrostis purpurascens PURPLE REED GRASS (Arctic Skipper)

Callirhoe POPPY MALLOW (Common Checkered-Skipper)

Calocedrus decurrens INCENSE CEDAR (Nelson's Hairstreak)

Carex bigelowii (Melissa Arctic)

C. heliophila SUN SEDGE (Dun Skipper)
C. Rupestris (Melissa Arctic)

Ceanothus species CALIFORNIA LILAC (Hedgerow Hairstreak, Bramble Green Hairstreak, California Tortoiseshell)

C. americana (Spring Azure)
C. cordulatus MOUNTAIN WHITETHORN (Pacuvius Duskywing)
C. fendleri DEER BRIER (Pacuvius Duskywing)
C. oliganthus HAIRYCEANOTHUS (Pacuvius Duskywing)

Celosia COCKSCOMB (Common Sootywing)

Celtis occidentalis HACKBERRY (Mourning Cloak)

Chasmanthium latifolia INDIAN WOOD OATS GRASS (Common Roadside-Skipper)

Chenopodium album LAMBSQUARTERS (Common Sootywing)

Cirsium NATIVE THISTLES (Mylitta Crescent, Painted Lady)

Collinsia CHINESE HOUSES (Spring Azure, Edith's Checkerspot)

Cornus DOGWOOD (Spring Azure)

Cuscuta DODDER (Brown Elfin)

Cynodon dactylon BERMUDA GRASS (Sachem, Woodland Skipper, Common Roadside-Skipper)

Cyperus esculentus CHUFA FLATSEDGE (Dun Skipper)

Danthonia spicata POVERTY OAT GRASS (Chryxus Artic)

Deschampsia elongata SLENDER HAIRGRASS (Juba Skipper)

Desmodium BEGGAR'S TICKS (Northern Cloudywing)

Diapensia lapponica (Arctic Blue)

Dicentra uniflora BLEEDING HEART (Clodius Parnassian)

D. formosa WESTERN BLEEDING HEART(Clodius Parnassian)
D. pauciflora (Clodius Parnassian)

Dodecatheon SHOOTING STAR (Arctic Blue)

Dudleya (Moss' Elfin)

Eleusine GOOSE GRASS (Sachem)

Elymus WILD RYE (Woodland Skipper)

Epigaea repens TRAILING ARBUTUS (Hoary Elfin)

Ericaceae HEATH (Mariposa Copper, Northern Blue)

Eriogonum species (Blue Copper, Bramble Green Hairstreak, Square-spotted Blue, Dotted Blue, Acmon Blue)

E. fasciculatum FLAT TOP (Lupine Blue)

E. umbellatum SULFUR FLOWER (Lupine Blue)

Festuca species FESCUES (Common Branded Skipper)

F. idahoensis IDAHO FESCUE (Sonora Skipper)

Fragaria virginiana WILD STRAWBERRY (Grizzled Skipper)

Fraxinus ASH (Western Tiger Swallowtail, Two-tailed Swallowtail)

Gleditsia triacanthos HONEY LOCUST (Silver-spotted Skipper)

Glycyrrhiza species LEGUMES (Silver-spotted Skipper)

Gnaphalium obtusifolium SWEET EVERLASTING (American Lady)

Hedysarum SWEET VETCH (Western Sulphur, Northern Blue)

Horkelia bolanderi clevelandii CLEVELAND'S HORKELIA (Two-banded Checkered-Skipper)

H. fusca DUSKY HORKELIA (Two-banded Checkered-Skipper)
H. tenuiloba SANTA ROSA HORKELIA (Two-banded Checkered-Skipper)

Hosackia LOTUS (Northern Cloudywing)

Humulus HOPS (Red Admiral)

Laportea canadensis WOOD NETTLE (Red Admiral)

Lathyrus VETCHES (Western-tailed Blue, Silvery Blue)

Lavatera TREE MALLOW (West Coast Lady)

Ledum groenlandicum LABRADOR TEA (Brown Elfin)

Lespedeza BUSH CLOVER (Northern Cloudywing)

Lithocarpus densiflorus TAN OAK (Golden Hairstreak)

Lonicera HONEYSUCKLE (Variable Checkerspot)

Lotus species (Bramble Green Hairstreak, Silvery Blue, Acmon Blue, Persius Duskywing)

Lupinus LUPINES (Western Sulphur, Arrowhead Blue, Silvery Blue, Boisduval's Blue, Acmon Blue, Persius Duskywing)

Machaeranthera species (Field Crescent)

Malva (Gray Hairstreak, Painted Lady, Common Checkered-Skipper)

Malvastrum BUSH MALLOW (West Coast Lady)

Medicago sativa ALFALFA (Clouded Sulphur)

Melilotus alba WHITE SWEET CLOVER (Western Sulphur, Silvery Blue)

Menziesia glabella MOCK AZALEA (Hoary Comma)

Orthocarpus OWL'S CLOVER (Edith's Checkerspot)

Oxytropis CRAZYWEED (Western-tailed Blue, Silvery Blue)

Parietoria pennsylvanica PELLITORY (Red Admiral)

Parvisedum (Moss' Elfin)

Pedicularis LOUSEWORT (Edith's Checkerspot)

Penstemon BEARD TONGUES (Variable Checkerspot, Edith's Checkerspot)

Petroselinum PARSLEY (Old World Swallowtail, Anise Swallowtail)

Phalaris CANARY GRASS (Woodland Skipper)

Phaseolus BEANS (Gray Hairstreak)

Pinus species PINE (Pine White)

P. contorta LODGEPOLE PINE (Western Pine Elfin)
P. flexilis LIMBER PINE (Western Pine Elfin)
P. ponderosa PONDEROSA PINE (Western Pine Elfin)

Pipturus albidus MAMAKI (Red Admiral)

Pisum sativum PEA (Clouded Sulphur)

Plantago PLANTAIN (Edith's Checkerspot)

Poa pratensis BLUEGRASS (Juba Skipper, Common Branded Skipper, Common Roadside-Skipper)

Polygonum species KNOTWEEDS (Purplish Copper)

P. bistortoides FALSE BISTORT (Titania Fritillary)
P. douglasii DOUGLAS KNOTWEED (Lilac-bordered Copper)
P. viviparum ALPINE SMARTWEED (Titania Fritillary)

Populus POPLAR (Dreamy Duskywing)

Populus deltoides COTTONWOOD (Western Tiger Swallowtail, Compton Tortoiseshell, Mourning Cloak, Lorquins Admiral)

Populus Tremuloides ASPEN (Western Tiger Swallowtail, Compton Tortoiseshell, Mourning Cloak, Lorquins Admiral, Dreamy Duskywing)

Questions, comments or suggestions? Would you like to communicate with other Pacific Northwest gardeners? Please join us on our forum.

Back to Native Plants and Wildlife