Brittle Bladderfern
Cystopteris fragilis
- Native to:
- Afghanistan, Albania, Algeria, Australia, Austria, Azores, Baleares, Baltic States, Belarus, Belgium, Bulgaria, Cameroon, Canada, Canary Is., Cape Verde, Chad, China, Comoros, Corse, Czechia-Slovakia, Denmark, DR Congo, Equatorial Guinea, Ethiopia, Finland, Føroyar, France, Germany, Greece, Greenland, Gulf of Guinea Is., Honduras, Hungary, Iceland, India, Iran, Iraq, Ireland, Italy, Japan, Kazakhstan, Kenya, Kirgizstan, Kriti, Krym, Kuril Is., Labrador, Lebanon-Syria, Lesotho, Madagascar, Madeira, Mexico, Morocco, Nepal, Netherlands, North Caucasus, Norway, NW. Balkan Pen., Pakistan, Poland, Portugal, Réunion, Romania, Russia, Sardegna, Saudi Arabia, Sicilia, South Africa, Spain, Sudan-South Sudan, Svalbard, Sweden, Switzerland, Tadzhikistan, Taiwan, Tanzania, Transcaucasus, Tunisia, Türkiye, Türkiye-in-Europe, Turkmenistan, Uganda, Ukraine, United States, Uzbekistan, Yemen
iNaturalist: © f_biguzzi (iNaturalist #196658350)
Taxonomy
- Division:
- Pteridophyta | - Ferns
- Family:
- Aspleniaceae
- Genus:
- Cystopteris
- Species:
- Cystopteris fragilis
- USDA Symbol:
- CYFR2
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 40 cm
- Light Requirements:
- Part Shade
- Drought Tolerance:
- Low
Garden & Ecology Notes
- Deer Resistant:
- Yes
Soil Requirements
- Soil Type:
- rocky, well-drained, nutrient-poor soil
- pH:
- 5.5 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- consistently moist
- Notes:
- often found in crevices of rocks
Propagation & Germination
- Notes:
- Fern reproduces via spores; spores require moist conditions and may take several months to develop prothalli.
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
ORGHPS Germination Guide: Sow @ 20°C. Seed germinates within 3 months * pour boiling water over milled sphagnum moss, sow seeds, enclose in plastic bag