Ram's Head Lady's Slipper

Cypripedium arietinum

Ram's Head Lady's Slipper

James Ellison from Canada

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Orchidaceae
Genus:
Cypripedium
Species:
Cypripedium arietinum

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Epiphyte
Height:
1-2 ft
Light Requirements:
Part Shade, Shade
Drought Tolerance:
High
Bloom Months:
may, jun
Bloom Colors:
White, Red, Green, Purple, Brown

Native Range

United States: Connecticut, Massachusetts, Maine, Michigan, Minnesota, New Hampshire, New York, Vermont, Wisconsin, Canada: Manitoba, Nova Scotia, Ontario, Quebec, Saskatchewan

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 forest floors with organic matter

Germination Information

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

Source: OpenAI GPT-4o