Fragile Rockbrake
Cryptogramma stelleri
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