Fragile Rockbrake

Cryptogramma stelleri

Fragile Rockbrake

Rob Routledge, Sault College, Bugwood.org

Taxonomy

Division:
Pteridophyta | - Ferns
Family:
Pteridaceae
Genus:
Cryptogramma
Species:
Cryptogramma stelleri

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
6 in - 1 ft
Light Requirements:
Full Sun, Part Shade, Shade
Drought Tolerance:
High
Bloom Colors:
Not Applicable

Native Range

United States: Alaska, Colorado, Connecticut, Iowa, Illinois, Massachusetts, Maine, Michigan, Minnesota, Montana, New Hampshire, New Jersey, Nevada, New York, Oregon, Pennsylvania, Utah, Vermont, Washington, Wisconsin, West Virginia, Wyoming, Canada: Alberta, British Columbia, New Brunswick, Nova Scotia, Northwest Territories, Ontario, Quebec, Yukon

Soil Requirements

Soil Type:
moist, well-drained rocky soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
consistently moist
Notes:
often found in shaded rocky crevices

Germination Information

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

Source: OpenAI GPT-4o