Sunflower Mule-Ears

Wyethia helianthoides

Native to:
United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Asteraceae
Genus:
Wyethia
Species:
Wyethia helianthoides
USDA Symbol:
WYHE2

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
60 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
may,jun,jul
Bloom Colors:
white, cream

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Butterflies & Moths:
★☆☆☆☆ Documented Lepidoptera association (GBIF)

Reported Fauna Sightings

Bees: Forest bumble bee (Bombus sylvicola), Hunt's bumble bee (Bombus huntii), Indiscriminate cuckoo bumble bee (Bombus insularis), Nevada bumble bee (Bombus nevadensis), Red-belted bumble bee (Bombus rufocinctus), Two-form bumble bee (Bombus bifarius), White-shouldered bumble bee (Bombus appositus), Yellow bumble bee (Bombus fervidus)

Garden & Ecology Notes

Wildlife Value:
bees, butterflies, birds
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts from deep taproot following fire; common in fire-maintained mountain meadows.

Soil Requirements

Soil Type:
well-drained, sandy loam soil
pH:
6.0 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
native to open, rocky slopes and meadows

Propagation & Germination

Stratification:
Cold/moist stratification required — 60–90 days
Germination Time:
14–42 days
Notes:
Seeds require cold stratification; germination can be erratic.

The above propagation data sourced from Claude AI