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Eriophyllum lanatum (Oregon Sunshine)
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© Lindsay Hunt, some rights reserved (CC-BY-NC) · iNaturalist

Eriophyllum lanatum

Oregon Sunshine

Western North America from British Columbia to Baja California

At a Glance

Height8-24 inches (20-60 cm)
Width12-24 inches (30-60 cm)
Maturity2 years

Growing Zones

USDA Hardiness Zones

4 - 10
These zones indicate the coldest temperatures this plant can typically survive.
What's my zone? →
Frost Tolerancehardy

Overview

A clump-forming evergreen-to-semi-evergreen perennial reaching 8-24 inches (20-60 cm) tall and 12-24 inches (30-60 cm) wide, growing from a fibrous-rooted basal crown. Stems and foliage covered in dense white-woolly hairs. Leaves alternate, 0.5-2 inches (1.5-5 cm) long, deeply lobed into linear segments — wool-coated to the point that the green plant tissue is sometimes obscured. Flower heads daisy-like, 1-1.75 inches (2.5-4.5 cm) across, with 8-13 yellow ray florets surrounding a yellow disc, borne singly on slender stems. Plants flower May through August across their range, with the heaviest bloom in June. Stems may flop after seed set, particularly under fertile garden conditions. Stands self-seed under bare-soil conditions, producing 10-30 volunteer seedlings per parent plant. Foliage is browsed only by livestock during forage shortages; deer typically do not eat it. Plants persist 4-6 years on most sites and are commonly replenished by self-sown seedlings.

Native Range

Native to western North America from southern British Columbia south through Washington, Oregon, and California to northern Baja California, east to Idaho, Utah, and Wyoming. Found on dry rocky slopes, coastal bluffs, sagebrush steppe, oak savanna, and roadcuts from sea level to 10,000 feet (3,050 m).

Suggested Uses

Planted in dryland meadow plantings, native rock gardens, and slope plantings within zones 4-10 at 12-18 inch (30-45 cm) spacing. Pairs with bunchgrasses, Penstemon, and Eriogonum in xeric perennial groupings. Grows in containers of at least 2 gallons (8 L) with coarse drainage and full sun.

How to Identify

Identified by dense white-woolly cover on stems and leaves — the lower side of leaves is so densely woolly the green tissue is obscured. Yellow daisy-like heads 1-1.75 inches (2.5-4.5 cm) across with 8-13 ray florets, borne singly on stems. Foliage deeply lobed into linear segments rather than entire (as in many Senecio) or pinnately compound. Stems and rosette persist through mild winters in zones 7-10; foliage dies back to crown in zones 4-6.

Appearance

Size & Dimensions

Height8" - 2'
Width/Spread1' - 2'

Reaches mature size in approximately 2 years

Colors

Flower Colors

Foliage Colors

Fall Foliage Colors

Bloom Information

Bloom Period

~14 weeks
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May through August across the species' range, with peak flowering in June. Lower-elevation populations bloom from late April; alpine and northern populations may bloom into early September. Each head lasts 7-10 days; total bloom per stand 8-14 weeks. Deadheading the first flush extends bloom by 3-4 weeks.

Detailed Descriptions

Foliage Description

Gray-green to silvery-white woolly

Growing Conditions

Sun Requirements

Requires 6-12 hours of direct sunlight daily
• Full Sun: 6+ hours of direct sunlight
• Partial Shade: 3-6 hours of direct sunlight
• Full Shade: Less than 3 hours of direct sunlight

Soil Requirements

pH Range6.0 - 8.0(Neutral)
357912
Soil Types
Drainagewell drained

Water & Climate

Water Needs

Low

Frost Tolerance

hardy

Time to Maturity

1-2 years

Drought Tolerance

Drought tolerant when established

Care & Maintenance

Care Guide

Plants establish quickly from autumn-sown seed, requiring no stratification; spring-sown seed germinates within 2-3 weeks at 60-70°F (15-21°C). Seedlings benefit from supplemental water during their first summer. Established plants tolerate 6-8 weeks of drought once roots reach a depth of 12 inches (30 cm). Crown rot develops on irrigated heavy clay or in pots with poor drainage. Powdery mildew is rare on dry-grown plants but may occur in humid coastal summers. Stands persist 4-6 years on most sites; replacement is by self-sown seedlings or fresh autumn sowing.

Pruning

Spent flower stems are sheared to 2 inches (5 cm) above the basal rosette in late August after bloom ends, encouraging tight regrowth and reducing self-seeding if not desired. A second light shearing in spring removes any winter-killed top growth without affecting bloom. Hard cutback into the woody crown delays flowering by 4-6 weeks.

Pruning Schedule

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summer

Maintenance Level

low

Container Growing

✓ Suitable for container growing

Minimum container size: 2 gallons

⚠️ Toxicity Warning

Non-toxic