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