| Scientific Name: | Athyrium filix-femina |
| Common Name: | lady fern |
| Family Name: | Athyriaceae |
| Origin: | B.C. east of Cascades |
| Hardiness Zone: | Zone 4: (-34 to -29 °C) |
| Plant Type: | Fern, Weed (horticultural) |
| Mature Size: | 1.3 - 2.0m x 1.0 - 1.5m (height x width) |
| Habit: | Arching |
| Form: | Vase |
| Texture: | Fine |
| Landscape Uses: | Group or mass planting, Waterside planting, Wetland - bogs, Woodland margin |
| Exposure: | Full sun, Part sun/part shade, Filtered shade, Deep shade |
| Soil or Media: | Bog, Humus rich |
| Leaves: | Compound, Fern-like, Basal, Soft flexible, Glabrous, Bipinnate, Elliptic, Oblanceolate, Pinnately lobed |
| Flowers: | |
| Fruit: | Sporangium (spores), Dark-red, Brown, Jul-Aug |
| Key ID Features: | |
| Fronds deciduous, thrice pinnate, elliptical, grooved rachis, up to 90cm long x 25cm wide, stipe may have long, brown papery scales near the base, arising from a clump (not along a rhizome); sori dot-like on undersides of pinnae, up to 6 per pinnule, indusium light brown, kidney-shaped. | |