Tiburon Mariposa Lily ⚠️ Threatened

Calochortus tiburonensis

Native to:
United States

📍 View on iNaturalist →

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Liliaceae
Genus:
Calochortus
Species:
Calochortus tiburonensis
USDA Symbol:
CATI3

Growth Characteristics

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

Wildlife Benefits

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

Garden & Ecology Notes

Wildlife Value:
bees, native pollinators
Deer Resistant:
Yes
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Adapted to California grassland fire regime. Bulbs survive fire and may show enhanced flowering following burns that reduce competing vegetation.

Soil Requirements

Soil Type:
rocky, serpentine, well-drained soil
pH:
6.0 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
native to serpentine soils; sensitive to soil composition

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Germination Time:
14–45 days
Notes:
Seeds benefit from cold-moist stratification. Germination may be erratic. Plants grow from bulbs and require summer dormancy period.

The above propagation data sourced from Claude AI