Mountain Lady's Slipper

Cypripedium montanum

Native to:
Canada, United States

📍 View on iNaturalist →

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Orchidaceae
Genus:
Cypripedium
Species:
Cypripedium montanum
USDA Symbol:
CYMO2

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Epiphyte
Height:
70 cm
Light Requirements:
Part Shade
Drought Tolerance:
Low
Bloom Months:
may,jun,jul
Bloom Colors:
white, purple

Garden & Ecology Notes

Deer Resistant:
Yes
Fragrant:
Yes

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
consistently moist
Notes:
prefers shaded forest floors with organic matter

Propagation & Germination

Stratification:
Cold/moist stratification required — 90–120 days
Notes:
Requires mycorrhizal fungi for germination and establishment; extremely difficult to germinate from seed without specialized techniques.

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