Sword fern (Nephrolepis exaltata)
Care, watering, light and tips for Sword fern on Floravia.
Quick facts
- Family: Nephrolepidaceae
- Difficulty: Moderate care
- Watering: every 3 days
- Light: Partial shade
- Temperature: 10–30 °C
About Sword fern
Nephrolepis exaltata, commonly known as the Boston fern, is a popular perennial fern cherished for its lush, bright green foliage and arching fronds. This plant is ideal for hanging baskets or for adding a tropical touch to any shaded indoor corner, bringing freshness and vitality. Its pinnate, finely divided fronds create a delicate and attractive texture, perfect for living rooms or bathrooms.
Native range
Tropical and subtropical regions of the Americas, including Florida, the West Indies, Mexico, Central America, and South America.
Care tips
The Boston fern thrives in bright, indirect light; direct sunlight can scorch its delicate fronds. Keep the soil consistently moist, but avoid waterlogging as it is prone to root rot. It requires high ambient humidity, so regular misting or placing it near a humidifier is beneficial. A common mistake is allowing the soil to dry out completely, which causes the fronds to turn brown and drop.
How to save a dying Sword fern
- Warning signs
- Dry/brown leaves, crispy tips, frond drop. Loses vibrant green, looks wilted.
- First aid
- Increase humidity (mist, pebble tray), water if soil is dry. Move away from drafts, heating/AC.
- What kills it
- Persistent dry air, lack of humidity, forgotten watering. Doesn't tolerate direct sun or waterlogging.
- Can it be saved?
- Yes, if roots aren't rotted. With consistent humidity and proper watering, it can re-sprout.