Clay Mariposa Lily

Calochortus argillosus

Native to:
United States

📍 View on iNaturalist →

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Liliaceae
Genus:
Calochortus
Species:
Calochortus argillosus
USDA Symbol:
CAAR44

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Geophyte
Height:
30 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
may,jun
Bloom Colors:
yellow, white

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)

Garden & Ecology Notes

Wildlife Value:
bees, native pollinators
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Geophyte that persists through fire via underground bulb. May flower prolifically following burns in grassland and chaparral habitats.

Soil Requirements

Soil Type:
sandy, well-drained, nutrient-poor soil
pH:
6.0 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
Native to clay and serpentine soils in California

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Germination Time:
14–45 days
Notes:
Seeds germinate best with cool, moist conditions. Bulbs go dormant after spring flowering and require dry summer dormancy.

The above propagation data sourced from Claude AI