Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Orobanchaceae

Genus:

Castilleja

Species:

Castilleja thompsonii

USDA Symbol:

CATH4

Growth Characteristics

Life Cycle:

Perennial

Growth Habit:

Parasite

Height:

30 cm

Light Requirements:

Full Sun

Drought Tolerance:

Medium

Bloom Months:

jun,jul,aug

Bloom Colors:

yellow, orange, red

Wildlife Benefits

Bees:

★☆☆☆☆ Documented bee visitation (GBIF)

Butterflies & Moths:

★☆☆☆☆ Documented Lepidoptera association (GBIF)

Reported Fauna Sightings

Garden & Ecology Notes

Wildlife Value:

hummingbirds, butterflies, bees

Deer Resistant:

Yes

Fire Ecology:

Fire adapted — tolerates or benefits from fire

Fire Notes:

Resprouts from root crown following fire; benefits from periodic burns that reduce competing vegetation.

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 mountainous regions

Propagation & Germination

Stratification:

Cold/moist stratification required — 60–90 days

Germination Time:

14–60 days

Notes:

Hemiparasitic; requires host plant roots for successful establishment. Surface sow as seeds need light for germination.

The above propagation data sourced from Claude AI