Scarlet Indian Paintbrush

Castilleja coccinea

Native to:
Canada, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Orobanchaceae
Genus:
Castilleja
Species:
Castilleja coccinea
USDA Symbol:
CACO17

Growth Characteristics

Life Cycle:
Annual
Growth Habit:
Parasite
Height:
60 cm
Light Requirements:
Full Sun
Drought Tolerance:
Low
Bloom Months:
apr,may,jun,jul
Bloom Colors:
red, orange, yellow

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Butterflies & Moths:
★☆☆☆☆ Documented Lepidoptera association (GBIF)

Garden & Ecology Notes

Wildlife Value:
hummingbirds, butterflies, bees
Deer Resistant:
Yes
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Responds positively to fire in prairie ecosystems; fire removes competing vegetation and promotes flowering.

Soil Requirements

Soil Type:
moist, well-drained, rich loamy soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
good drainage required
Moisture:
consistently moist
Notes:
prefers open, sunny areas

Propagation & Germination

Stratification:
Cold/moist stratification required — 60–90 days
Germination Time:
14–60 days
Notes:
Hemiparasitic; requires host plant roots (grasses or forbs) for successful establishment. Seeds need light for germination.

Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).

Source: Claude AI

ORGHPS Germination Guide: Sow @ 4C for 3 months, then place @ 20C for 3 months.

Source: Ontario Rock Garden & Hardy Plant Society