Oregon Goldthread

Coptis laciniata

Native to:
United States

📍 View on iNaturalist →

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Ranunculaceae
Genus:
Coptis
Species:
Coptis laciniata
USDA Symbol:
COLA3

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
15 cm
Light Requirements:
Part Shade
Drought Tolerance:
Low
Bloom Months:
apr,may,jun
Bloom Colors:
white
Ground Cover:
Yes

Garden & Ecology Notes

Deer Resistant:
Yes

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.0 - 6.5 (acidic to slightly acidic)
Drainage:
excellent drainage required
Moisture:
consistently moist
Notes:
prefers shaded, forested environments

Propagation & Germination

Stratification:
Cold/moist stratification required — 60–90 days
Germination Time:
30–180 days
Notes:
Seeds require cold stratification and may germinate erratically over several months. Best sown fresh in fall for natural stratification.

The above propagation data sourced from Claude AI

Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).; then Cold-moist stratification for 60 days.

Source: Claude AI