Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Liliaceae

Genus:

Lilium

Species:

Lilium washingtonianum

USDA Symbol:

LIWA

Growth Characteristics

Life Cycle:

Perennial

Growth Habit:

Geophyte

Height:

200 cm

Light Requirements:

Full Sun

Drought Tolerance:

Medium

Bloom Months:

jun,jul,aug

Bloom Colors:

white, pink

Wildlife Benefits

Butterflies & Moths:

★☆☆☆☆ Documented Lepidoptera association (GBIF)

Garden & Ecology Notes

Wildlife Value:

hummingbirds, butterflies

Fragrant:

Yes

Fire Ecology:

Fire adapted — tolerates or benefits from fire

Fire Notes:

Native to montane coniferous forests with periodic fire regimes; bulbs resprout after moderate-intensity fires.

Soil Requirements

Soil Type:

rich, well-drained loamy soil

pH:

5.5 - 7.0 (slightly acidic to neutral)

Drainage:

excellent drainage required

Moisture:

consistently moist

Notes:

Prefers mountainous regions with organic matter

Propagation & Germination

Stratification:

Cold/moist then warm stratification (double dormancy) — 90–180 days

Germination Time:

30–365 days

Notes:

Requires warm period for root development followed by cold stratification; hypogeal germination with delayed leaf emergence. May take 1-2 years from seed to first leaf.

The above propagation data sourced from Claude AI