Splitleaf Indian Paintbrush
Castilleja rhexiifolia
- Native to:
- Canada, United States
iNaturalist: © je9h (iNaturalist #331834013)
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Orobanchaceae
- Genus:
- Castilleja
- Species:
- Castilleja rhexiifolia
- USDA Symbol:
- CARH4
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb , Subshrub
- Height:
- 60 cm
- Light Requirements:
- Part Shade
- Drought Tolerance:
- Medium
- Bloom Months:
- jun,jul,aug
- Bloom Colors:
- red, pink, magenta
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
Reported Fauna Sightings
Bees: High country bumble bee (Bombus kirbiellus), Yellow bumble bee (Bombus fervidus), Yellow head bumble bee (Bombus flavifrons)
Garden & Ecology Notes
- Wildlife Value:
- hummingbirds, butterflies
- Deer Resistant:
- Yes
Soil Requirements
- Soil Type:
- moist, well-drained, rocky or sandy soil
- pH:
- 5.5 - 7.0 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- consistently moist
- Notes:
- often found in alpine and subalpine meadows
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–30 days
- Notes:
- Seeds benefit from cold moist stratification for 4-8 weeks. Surface sow on moist medium and keep warm after stratification.
Pre-treatment: Seeds are placed into a 150 day cold, moist stratification using moistened paper towels in an unsealed ziplock bag in a refrigerator at 2C or they can be fall sown outdoors.
Source: npn.rngr.net
Where to Buy
Nationwide Seller
- Native Seed Group (seeds)