Polystichum setiferum
'Dahlem'
Dahlem Soft Shield Fern
| Family |
| Dryopteridaceae |
| Genus |
| Polystichum |
| Species |
| setiferum |
| Cultivar |
| 'Dahlem' |
| Category |
| Perennials |
| Type |
| Ferns |
| USDA Hardiness Zone |
| 1a - 6a |
| Canadian Hardiness Zone |
| 0a - 5b |
| RHS Hardiness Zone |
| H7 |
| Temperature (°C) |
| -51 - (-21) |
| Temperature (°F) |
| -60 - (-5) |
| Height |
| 30 - 120 cm |
| Spread |
| 50 - 130 cm |
| General Description |
| A rhizomatous, softly-textured evergreen fern with mid-green fronds and stalks covered in orange-brown scales. |
| Landscape |
| Ground cover, flower bed borders, underplanting of roses and shrubs or around cottages. |
| Cultivation |
| Grow in part to full shade, in moist, well-drained, humus-rich slightly acidic soil. Protect from excess moisture in winter. |
| Shape |
| Clumping. |
| Growth |
| Medium |
| Habitat |
| Horticultural origin. |
| Bark/Stem Description |
| Stipes are covered in wide, pale orange-brown scales. |
| Leaf Description |
| Pinnately divided fronds of small very serrated leaflets. Pointed fronds are 30 - 120 ⨉ 10 - 25 cm with pinnae up to 11 ⨉ 2.5 cm, up to 40 per side. Secondary divisions or pinnules have serrated margins. |
| Colour Description |
| Greenish-red foliage. Greenish-red stems. |
| Texture Description |
| Fronds have a soft feathery texture. |
| Notable Specimens |
| VanDusen Botanical Garden, Vancouver, British Columbia, Canada. |
| Propagation |
| By sowing spores or division of rhizomes. |