Native Habitat:
Dry prairies, oak savannas, open grasslands, rocky slopes, dry meadows, and open woodland edges throughout the Pacific Northwest. It is particularly characteristic of summer-dry habitats of the Willamette Valley, where it thrives in full sun and well-drained soils.
Bloom Time:
May – August
Growth Habit & Mature Size:
Long-lived perennial, typically 1–2 feet tall and wide, forming rounded, branching mounds. The foliage is deeply divided and covered with fine hairs, giving the plant a distinctive gray-green to silvery appearance. Numerous bright golden-yellow, daisy-like flowers are held above the foliage.
Light & Soil Requirements:
Full sun; prefers well-drained, dry to moderately moist soils. It performs particularly well in sandy, gravelly, rocky, or low-fertility soils and is highly tolerant of summer drought once established. Avoid prolonged winter saturation.
Willamette Valley Native Companion Plants:
Festuca idahoensis
Achnatherum lemmonii
Achillea millefolium
Wyethia angustifolia
Lomatium nudicaule
Allium cernuum
Urban Garden Function:
One of the best native perennials for Willamette Valley prairie gardens, oak savannas, dry meadows, rock gardens, and low-water landscapes. Its compact, silver-gray foliage creates a strong textural contrast with green bunchgrasses, while its abundant yellow flowers provide a long season of color. Its mounded habit makes it especially useful along paths, in small urban habitat gardens, and at the front of larger prairie plantings.
Wildlife Supported:
The abundant flower heads provide pollen and nectar for a broad diversity of native bees, including mining bees, sweat bees, small solitary bees, and bumblebees. Syrphid flies, bee flies, beetles, butterflies, and other flower-visiting insects also use the blooms.
The plant also supports herbivorous insects, including caterpillars, aphids, leafhoppers, and small beetles. These insects become food for spiders, lacewings, predatory beetles, insect-eating birds, and other wildlife. Mature seeds can be eaten by small seed-eating birds, while the compact foliage provides shelter for ground-dwelling insects.
Historical Use:
Eriophyllum lanatum has been used traditionally by Indigenous peoples of the Pacific Northwest and western North America for various medicinal and practical purposes. Uses differed among cultures and communities. The plant is particularly well known today as a characteristic component of native prairie and oak-savanna ecosystems.
Seed Germination:
Oregon Sunshine is readily propagated from seed. Fall sowing is recommended, allowing natural winter conditions to provide the cold period that can improve germination. For spring sowing, provide approximately 30–60 days of cold-moist stratification.
Sow seeds approximately ⅛–¼ inch deep in a very well-drained, sandy or gritty seed-starting mix. Keep the medium lightly moist rather than saturated. After stratification, provide bright light and temperatures around 55–65°F (13–18°C). Germination usually occurs within several weeks but can be somewhat irregular.
Once seedlings have developed several true leaves, transplant carefully. Provide regular water during the first growing season, then gradually reduce irrigation. Mature plants should receive full sun and excellent drainage, with little or no summer irrigation once established.
