Wavy sword fern (Nephrolepis flexuosa)
Care, watering, light and tips for Wavy sword fern on Floravia.
Quick facts
- Family: Nephrolepidaceae
- Difficulty: Moderate care
- Watering: every 3 days
- Light: Partial shade
- Temperature: 10–30 °C
About Wavy sword fern
Nephrolepis flexuosa, commonly known as the thermal ladder fern, is a medium-sized tropical fern characterized by its long, arching fronds, which are bright green and finely textured. Its delicate leaflets are arranged in pairs along the rachis, creating a ladder-like effect. It is ideal for hanging baskets or as an indoor plant in high-humidity environments, bringing a tropical lushness.
Native range
Tropical and subtropical Americas, including the Southern United States, Mexico, Central America, the Caribbean, and South America.
Care tips
It prefers bright, indirect light; avoid intense direct sunlight which can scorch its delicate fronds. Keep the substrate consistently moist, but not waterlogged, and mist the fronds regularly to increase ambient humidity. Use a well-draining, organic-rich potting mix. A common mistake is allowing the substrate to dry out completely between waterings, which can lead to browning of the frond tips.
How to save a dying Wavy sword fern
- Warning signs
- Pale or yellowing fronds, dry and brown tips, excessive frond drop.
- First aid
- Increase humidity with misting or a pebble tray, check drainage and watering frequency.
- What kills it
- Dry air, lack of consistent humidity, and completely dry potting mix.
- Can it be saved?
- Yes, if the base is still alive; it can regrow with proper conditions and patience.