Cystopteris protrusa  |
| Family | Dryopteridaceae |
| Plant Type | fern |
| Zone | USDA: 2a - 9b RHS: H - FH EGF: H1 - H5 Australia: 1 - 3 |
| Care Level | low, easy, suitable for beginners. |
| Height | 15 - 45 cm (6 - 18 in) |
| Spread | 15 - 45 cm (6 - 18 in) |
| Light | partial shade to shade |
| Soil Moisture | average, well-drained |
| Soil Type | loam |
| Soil pH | neutral to alkaline |
| | |
| Description | The foliage is greyish green in colour. |
| Typical Uses | Alpine or rock garden, bank cover, border, woodland and woods edge. |