Osmunda regalis
'Cristata'
Cristata Royal Fern
Family |
Osmundaceae |
Genus |
Osmunda |
Species |
regalis |
Cultivar |
'Cristata' |
Category |
Perennials, Ferns |
USDA Hardiness Zone |
6b - 7a |
Canadian Hardiness Zone |
6a - 6b |
RHS Hardiness Zone |
H6 |
Temperature (°C) |
-21 - (-15) |
Temperature (°F) |
-5 - 5 |
Height |
1 - 1.5 m |
Spread |
1 - 1.5 m |
General Description |
Osmunda regalis 'Cristata' is a bushy deciduous fern with bipinnate fronds. |
Cultivation |
Grow in full sun to full shade, moist, well- to poorly-drained soil. |
ID Characteristic |
Pinnules, pinnae and fronds are all terminally forked. |
Pests |
No serious pests or diseases of note. |
Habitat |
Horticultural origin. |
Leaf Description |
In summer, the tips of fertile fronds are covered with rust-coloured sori (spore-producing receptacles). |
Flower Description |
Non-flowering but producing spores. |
Notable Specimens |
RHS Garden Rosemoor, North Devon, England. |