Fragile Rockbrake
Cryptogramma stelleri
- Native to:
- Afghanistan, Canada, China, India, Japan, Kazakhstan, Kirgizstan, Labrador, Nepal, Pakistan, Russia, Tadzhikistan, Taiwan, United States
iNaturalist: © alleghenies (iNaturalist #133845167)
Taxonomy
- Division:
- Pteridophyta | - Ferns
- Family:
- Pteridaceae
- Genus:
- Cryptogramma
- Species:
- Cryptogramma stelleri
- USDA Symbol:
- CRST2
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 20 cm
- Light Requirements:
- Full Sun,Part Shade,Shade
- Drought Tolerance:
- Low
Garden & Ecology Notes
- Deer Resistant:
- Yes
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
Propagation & Germination
Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).
Source: Claude AI