Wholeleaf Indian Paintbrush
Castilleja integra
- Native to:
- Mexico, United States
iNaturalist: © campmlc (iNaturalist #276178240)






Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Orobanchaceae
- Genus:
- Castilleja
- Species:
- Castilleja integra
- USDA Symbol:
- CAIN14
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb , Subshrub
- Height:
- 50 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- apr,may,jun,jul,aug,sep
- Bloom Colors:
- orange, red, yellow
Wildlife Benefits
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
- Caterpillars:
- ★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)
Host Plant for Caterpillars
Anicia checkerspot (Euphydryas anicia), Thessalia fulvia, Thessalia leanira, Variable checkerspot (Euphydryas chalcedona)
Garden & Ecology Notes
- Wildlife Value:
- hummingbirds, butterflies
- Deer Resistant:
- Yes
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Resprouts from root crown after fire; commonly found in fire-maintained grasslands and open woodlands.
Soil Requirements
- Soil Type:
- rocky, well-drained, nutrient-poor soil
- pH:
- 6.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- often found in open, sunny areas
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–90 days
- Germination Time:
- 14–60 days
- Notes:
- Hemiparasitic; requires host plant roots (grasses or shrubs) for successful establishment. Seeds need light for germination.