Nephrolepis exaltata

Schwertfarn · (Nephrolepis exaltata)

Sword-fern family (Nephrolepidaceae)

Description

Nephrolepis exaltata, known as the sword fern or Boston fern, is a species of fern in the family Nephrolepidaceae. It is native to the Americas. This evergreen plant can reach as high as 40–90 centimetres (16–35 in), and in extreme cases up to 1.5 metres.

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As a hanging houseplant, Nephrolepis exaltata is one of the most effective natural air humidifiers. The NASA study (Wolverton 1989) ranked it in the top group for reducing formaldehyde and xylene from indoor air.
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In addition to formaldehyde, the Boston fern also absorbs xylene and toluene from indoor air — typical pollutants from paints, adhesives, and printer ink.
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As a lush hanging plant with arching fronds, Nephrolepis exaltata is a decorative element in living rooms, bathrooms, and offices. The high transpiration noticeably improves the indoor climate.
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According to ASPCA, Nephrolepis exaltata is not toxic to either dogs or cats, and is also considered safe for small children. As one of the few houseplants with no toxic potential, the Boston fern is particularly recommended for family households.
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Distribution in Europe

🪴 Grow at home

☀ Light: partial shade
💧 Water: every few days
🌱 Soil: Humus-rich soil, moist
🪴 Pot: 22 cm
⭐ Difficulty: ★★☆ intermediate
🐾 Pets: pet-safe

Tips:

Loves the bathroom — high humidity and indirect light.
Never let it dry out — fronds turn brown immediately.
Mist regularly, especially in winter.

Care tips are general indoor-gardening recommendations, not scientific sources.