California Flannelbush
Fremontodendron californicum
- Native to:
- Mexico, United States
iNaturalist: © borregodude (iNaturalist #150875607)






Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Malvaceae
- Genus:
- Fremontodendron
- Species:
- Fremontodendron californicum
- USDA Symbol:
- FRCA6
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Shrub , Tree
- Height:
- 600 cm
- Light Requirements:
- Part Shade
- Drought Tolerance:
- High
- Bloom Months:
- apr,may,jun
- Bloom Colors:
- yellow, orange
- Landscaping Shrub:
- Yes
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
- Caterpillars:
- ★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)
Host Plant for Caterpillars
Acontia major, Hemileuca chinatiensis, Saturnia albofasciata
Reported Fauna Sightings
Hummingbirds: Anna's Hummingbird (Calypte anna)
Garden & Ecology Notes
- Wildlife Value:
- birds, bees
- Deer Resistant:
- Yes
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Resprouts vigorously from root crown after fire. Adapted to chaparral fire regimes.
Soil Requirements
- Soil Type:
- poor, sandy, well-drained soil
- pH:
- 6.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- Native to rocky slopes and chaparral regions
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–90 days
- Scarification:
- Seed coat scarification required before sowing
- Germination Time:
- 14–60 days
- Notes:
- Hot water treatment or scarification improves germination. Seeds may benefit from fire or smoke treatment.
The above propagation data sourced from Claude AI