Giant Chainfern
Woodwardia fimbriata
- Native to:
- Canada, Mexico, United States
John Rusk (www.flickr.com) from Berkeley, CA, United States of America






Taxonomy
- Division:
- Pteridophyta | - Ferns
- Family:
- Aspleniaceae
- Genus:
- Woodwardia
- Species:
- Woodwardia fimbriata
- USDA Symbol:
- WOFI
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 270 cm
- Light Requirements:
- Part Shade
- Drought Tolerance:
- Low
Garden & Ecology Notes
- Wildlife Value:
- birds, small mammals
- Deer Resistant:
- Yes
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Resprouts vigorously from rhizomes after fire. Often found in moist canyons and seeps where fire occasionally occurs.
Soil Requirements
- Soil Type:
- rich, well-drained loamy soil
- pH:
- 5.5 - 7.0 (slightly acidic to neutral)
- Drainage:
- tolerates poor drainage
- Moisture:
- consistently moist
- Notes:
- prefers shaded, damp environments
Propagation & Germination
- Notes:
- Ferns reproduce via spores, not seeds. Spore germination requires moist, shaded conditions and sterile medium; prothallus development precedes sporophyte growth.
The above propagation data sourced from Claude AI
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