Royal fern (Osmunda regalis)
Care, watering, light and tips for Royal fern on Floravia.
Quick facts
- Family: Osmundaceae
- Difficulty: Demanding
- Watering: every 3 days
- Light: Partial shade
- Temperature: 10–30 °C
About Royal fern
Osmunda regalis, also known as the royal fern, is a majestic plant that can grow quite large, featuring deeply divided, bright green fronds resembling tree leaves. Its sporangia, which develop at the apex of fertile fronds, give it a 'flowering' appearance, hence its common name. It is ideal for ponds, damp garden areas, or as a striking specimen in a shady, woodland landscape.
Native range
Europe, Africa, Asia and America
Care tips
This fern thrives in partial to full shade and consistently moist but well-drained soil; it should never be allowed to dry out completely. A substrate rich in organic matter and slightly acidic is ideal for its growth. It is crucial to avoid prolonged waterlogging, as it can lead to root rot, and protect it from strong winds that can damage its fronds.
How to save a dying Royal fern
- Warning signs
- Brown, dry, brittle fronds, especially at edges. Stunted growth. Excessively dry soil.
- First aid
- Move to a shady, humid spot. Water abundantly with soft water. Mist the fronds.
- What kills it
- Dry substrate and air. Intolerance to direct sun and alkaline or poor organic soils.
- Can it be saved?
- Yes, if roots aren't completely dry. Constant moisture and shade are key. It can re-sprout.