Denseflower Indian Paintbrush
Castilleja densiflora
- Native to:
- Mexico, United States
iNaturalist: © ekoberle (iNaturalist #111750416)






Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Orobanchaceae
- Genus:
- Castilleja
- Species:
- Castilleja densiflora
- USDA Symbol:
- CADE29
Growth Characteristics
- Life Cycle:
- Annual
- Growth Habit:
- Parasite
- Height:
- 40 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Medium
- Bloom Months:
- mar,apr,may
- Bloom Colors:
- purple, pink, white
Wildlife Benefits
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
- Caterpillars:
- ★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)
Host Plant for Caterpillars
⚠️Edith's checkerspot (Euphydryas editha), Variable checkerspot (Euphydryas chalcedona)
Garden & Ecology Notes
- Wildlife Value:
- butterflies, hummingbirds
- Deer Resistant:
- Yes
Soil Requirements
- Soil Type:
- well-drained, sandy or clay loam
- pH:
- 5.5 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- often found in grasslands and open woodlands
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–30 days
- Notes:
- Seeds benefit from cold stratification for 4-8 weeks to break dormancy.
Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).
Source: Claude AI