Gymnocarpium dryopteris (Oak Fern)
Botanical Information
| Family | Woodsiaceae |
| Genus | Gymnocarpium |
| Species | dryopteris |
| Category | Perennials, Ferns |
| Origin | Native to the temperate northern hemisphere. |
Details
| USDA Hardiness Zone | 7b - 8a |
| USDA Hardiness Ref. | |
| Canadian Hardiness Zone | 7 |
| Canada Hardiness Ref. | |
| RHS Hardiness Zone | H5 |
| RHS Hardiness Ref. | |
| Temperature (°C) | - 15 - (-10) |
| Temperature (°F) | 5 - 14 |
| Height | 30 cm |
| Spread | 1 m |
| Growth | Medium |
Description and Growing Information
| Shape | Mat-forming and spreading. |
| Landscape | Border planting, groundcover and informal gardens. |
| Propagation | Spores and division. |
| Cultivation | Full shade. Moist and well-drained soils with a pH of acidic and neutral. Prefers sand and loam. |
| Notable Specimens | RHS Garden Rosemoor, North Devon, England. The University of Alberta Botanic Garden, Devon, Alberta, Canada. |
| Habitat | Forests, rocky slopes and thickets. |
| Leaf Description | Divided and triangular to ovate fronds. 2 - 3 pinnate fronds that are 10 - 20 cm long and wide. |
| Flower Description | Non-flowering but producing spores. |
| Colour Description | The leaves are bright green. |
Photographs
G. dryopteris 'Plumosum' at RHS Garden Rosemoor in North Devon, England.
Awards
