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TABLE 2: WILLAMETTE VALLEY NATIVE HOST PLANTS
FOR BUTTERFLIES
B. Newhouse/January 2001

Selection criteria: appropriateness for growth on valley floor or adjacent hillsides, use by common butterfly species, practicality for use in gardening, and feasibility of obtaining and growing. Try to obtain stock collected or propagated LOCALLY to protect local genetic diversity.

KEY:

Stature (S): T = tree S = shrub H = herb
Light : SN=sun PS = part shade SH = shade
Moisture: W=wet A=average D= dry
Availability: N = nurseries C = cuttings S = seed collected by botanists or Native Plant Society of OR

PLANT INFORMATION Light Moisture
Comments
Availabilty
SN PS SH W A D
T alder, red Alnus rubra X X X X Vigorous. Prefers to be near stream. N; C
S ceanothus, redstem Ceanothus sanguineus X X X Beautiful red stems, white flower clusters. N? C?
H checkermallow, Cusick's Sidalcea cusickii X X X X Sim. to meadow checkermallow; darker pink, moister site. N; S
H checkermallow, meadow Sidalcea campestris X X Tall, with light pink spikes of flowers. N; S
H checkermallow, rosy Sidalcea virgata X X Similar to meadow checkermallow, but shorter. N; S
S cherry, choke- Prunus virginiana X X Also a good bird food plant. N
H cinquefoil, slender Potentilla gracilis X X X Can handle slightly moist areas; bright yellow flowers S
PLANT INFORMATION Light Moisture
Comments
Avail-abilty
SN PS SH W A D
H everlasting, pearly Anaphalis margaritacea X X X Also a good nectar plant. N; S
H heart, bleeding Dicentra formosa X X X Prefers moist. Sole host plant for clodius parnassian. N
H lomatium, fernleaf Lomatium dissectum X X X X Finely divided leaves, small flowers. S
H lupine, many-leaved Lupinus polyphyllus X X X Or streambank lupine (L. rivularis), for dry habitat, sun. N; S
H lupine, streambank Lupinus rivularis X X X Short-lived perennial. S
T maple, bigleaf Acer macrophyllum X X X Fast growing. N; S
H milkweed, showy Asclepias speciosa X X Also a good nectar plant; forms patches. N; S
PLANT INFORMATION Light Moisture
Comments
Avail-abilty
SN PS SH W A D
H monkey flower, yellow Mimulus guttatus X X X Likes low, damp ditches; OK with flower bed irrigation. S
H mugwort Artemesia douglasiana X X X Forms 4' tall patches; flowers small, leaves w/silvery cast. S
H nettles, stinging Urtica dioica X X X Not good near small children; best in "back corner" S
T oak, California black Quercus kelloggii X X Eugene is north end of this species range. N?
T oak, Oregon white Quercus garryana X X May grow 2 feet/year; oak mistletoe also a host plant! N
S oceanspray Holodiscus discolor X X X Forms dense shrub also revered by birds. N
S rose, Nootka Rosa nutkana X X Prefers slightly moist. N
PLANT INFORMATION Light Moisture
Comments
Avail-abilty
SN PS SH W A D
H strawberry, broadpetal Fragaria virginiana var. platyphylla X X Makes handsome ground cover. N; S
H vetch, American Vicia americana X X X Somewhat sprawling – not erect. S
H violet, early blue Viola adunca var. adunca X X X Becoming rare in our area. Avoid non-local seed. N;
H violet, stream Viola glabella X X X Often likes slightly moister than average. N; S
T willow, Scouler's Salix scouleriana X X X Small tree; upland substitute for wetland willows. C
H wintercress, American Barbarea othoceras X X X Not much known about cultivation. S
H yarrow Achillea millefolium X X White flowers; also a good nectar plant. S

Butterfly Gardening Introduction

Table # 1 Willamette Valley Butterflies and Their Native Host Plants

Table # 3 Willamette Valley Native Nectar Plants for Butterflies

Photographs of Native Host Plants for Butterflies

Photographs of Native Nectar Plants for Butterflies

Download Tanya Harvey's list of Favorite Butterfly Plants in pdf format



Page design: Neil Björklund.

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