Perennials > Blechnum > Blechnum penna-marina > Blechnum penna-marina subsp. alpinum
Blechnum penna-marina
ssp. alpinum
Alpine Water Fern
Origin: Native to Australasia and Chile. Genus name from the Greek word for fern, 'blechnon'.
| Family |
| Blechnaceae |
| Genus |
| Blechnum |
| Species |
| penna-marina |
| Category |
| Perennials |
| Type |
| Ferns |
| Subspecies |
| alpinum |
| USDA Hardiness Zone |
| 8 |
| Canadian Hardiness Zone |
| 7 - 8a |
| RHS Hardiness Zone |
| H4 - H5 |
| Temperature (°C) |
| -12 - (-7) |
| Temperature (°F) |
| 10 - 20 |
Photographs
Description and Growing Information
Flowering Period
| General Description |
| Blechnum penna-marina subsp. alpinum is a fern with creeping rhizomes and ladder-shaped fronds. |
| Growth |
| Slow |
| Leaf Description |
| Pinnae are rounded, consistently sized along fronds, new growth is bronze-coloured. |
| Flower Description |
| Non-flowering but producing spores. |
| Notable Specimens |
| RHS Garden Rosemoor, North Devon, England. |
top