Osmunda regalis var. spectabilisRef.: OSMUN 002
Origin : North America.
Family : Osmundaceae
American royal fern.
This American variety differs from the species by its young croziers, stipes and rachises, first orange-brown coloured, then copper, and lastly tender green. Its fronds go yellow later, in autumn, giving beautiful colours. Plant it in a pond bank, half-submerged, or in a cool to moist soil, acidic or slightly alkaline, in the sun or half-shade (according to the region). Deciduous. Height and width : 1m/2m. Hardiness : -35°C.
- Foliage : deciduous
- Height : over 90cm
- Soil type : acidic, deep, humusy, peaty
- Site : streams or ponds banks, bogs, cool to moist woods
- Exposure : half shade, sun
- Shape : upright, flared
- Rhizome : erect
- Hardiness : down to -30°C (-22°F)