Bristly Jewelflower
Streptanthus glandulosus
- Native to:
- United States
Nicholaswei
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Brassicaceae
- Genus:
- Streptanthus
- Species:
- Streptanthus glandulosus
- USDA Symbol:
- STGL8
Growth Characteristics
- Life Cycle:
- Annual
- Growth Habit:
- Forb/herb
- Height:
- 100 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- mar,apr,may,jun
- Bloom Colors:
- purple, white
Wildlife Benefits
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
- Caterpillars:
- ★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)
Host Plant for Caterpillars
California Marble (Euchloe hyantis), Sara Orangetip (Anthocharis sara), Spring white (Pontia sisymbrii)
Reported Fauna Sightings
Bees: Black-tailed bumble bee (Bombus melanopygus)
Garden & Ecology Notes
- Wildlife Value:
- butterflies
- Deer Resistant:
- Yes
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Resprouts from root crown following fire; found in fire-prone chaparral and grassland habitats.
Soil Requirements
- Soil Type:
- sandy, well-drained, nutrient-poor soil
- pH:
- 5.5 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- native to rocky, serpentine soils
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–30 days
- Notes:
- Seeds germinate best with cold stratification; light may improve germination rates.
The above propagation data sourced from Claude AI