Curly sword fern (Nephrolepis hirsutula)
Care, watering, light and tips for Curly sword fern on Floravia.
Quick facts
- Family: Nephrolepidaceae
- Difficulty: Moderate care
- Watering: every 3 days
- Light: Partial shade
- Temperature: 10–30 °C
About Curly sword fern
The Nephrolepis hirsutula fern, known as Käkaahue in some cultures, is a medium-sized terrestrial or epiphytic fern with bright green pinnate fronds that form a dense, attractive clump. Its finely divided, slightly hairy leaves give it a soft texture and a lush appearance. It's ideal for adding a tropical and fresh touch to interiors, terrariums, or as a hanging plant in warm, humid climates.
Native range
Tropical and subtropical Americas, from the southern United States to South America, and also in parts of Africa and Asia.
Care tips
This fern prefers bright, indirect light; direct sunlight can scorch its fronds. Keep the substrate consistently moist but not waterlogged, watering when the top layer begins to dry out. Use a well-draining, organic-rich substrate, such as a fern mix. Avoid extremely dry air, as this can cause the frond tips to dry out and become brittle.
How to save a dying Curly sword fern
- Warning signs
- Dry, brown, crispy leaves, especially at edges and tips. Low ambient humidity.
- First aid
- Increase humidity with daily misting or a humidifier. Check watering to ensure soil is consistently moist, not waterlogged.
- What kills it
- Dry air, lack of constant humidity, and letting the substrate dry out completely between waterings. Direct sun exposure.
- Can it be saved?
- Yes! If the rhizome is still green and firm, there's hope. Remove dead fronds and be consistent with humidity and watering.