Sierra Tansymustard
Descurainia californica
- Native to:
- United States
iNaturalist: © marcus_t (iNaturalist #127629544)






Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Brassicaceae
- Genus:
- Descurainia
- Species:
- Descurainia californica
- USDA Symbol:
- DECA6
Growth Characteristics
- Life Cycle:
- Annual | Biennial
- Growth Habit:
- Forb/herb
- Height:
- 60 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Medium
- Bloom Months:
- mar,apr,may,jun
- Bloom Colors:
- yellow
Wildlife Benefits
- Caterpillars:
- ★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)
Host Plant for Caterpillars
Large Marble (Euchloe ausonides)
Garden & Ecology Notes
- Wildlife Value:
- birds
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Colonizes disturbed and burned areas; seeds may benefit from fire-cleared soil.
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:
- common in arid, open areas
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 7–21 days
- Notes:
- Seeds germinate readily in cool conditions. Light may enhance germination.
The above propagation data sourced from Claude AI