Boston Fern
Nephrolepis exaltata Smithii
Smithii
About this plant
The Boston Fern 'Smithii' is a popular houseplant known for its lush, arching fronds with finely divided leaflets. It adds a tropical feel to indoor spaces and is valued for its air-purifying qualities. This fern is often used in hanging baskets or as a decorative foliage plant.
Taxonomy
- Genus
- Nephrolepis
- Family
- Nephrolepidaceae
- Higher classification
- Polypodiopsida (ferns)
- Plant type
- Houseplant
- Lifespan
- Perennial
Origin & Distribution
- Native region
- Tropical Americas
- Distribution
- Widely cultivated indoors worldwide, originally native to tropical regions of the Americas.
Care
- Light preference
- Partial shade
- Suitable locations
- Indoor, Balcony, Greenhouse
- Preferred window facing
- North-facing, East-facing, Northeast-facing, Northwest-facing
- Watering frequency
- Moderate
- Watering interval
- 2–4 days
- Humidity
- High
- Minimum
- 13 °C
- Maximum
- 29 °C
- Optimal
- 18-24 °C
- USDA hardiness zones
- 9-11
- Soil pH
- 5.5-6.5
- Soil type
- well-draining, rich potting soil with organic matter
Watering. Keep soil consistently moist but not soggy. Water when the top inch of soil feels dry. Increase humidity by misting regularly or using a humidity tray.
Fertilizing. Feed monthly during the growing season with a balanced, water-soluble fertilizer diluted to half strength. Avoid fertilizing in winter when growth slows.
Nephrolepis exaltata 'Smithii' is a hardy fern that thrives in indirect light and humid conditions. It prefers consistently moist soil but can suffer if overwatered. Regular misting and occasional feeding keep it healthy, making it a low-maintenance plant ideal for beginners.
Propagation
- Propagation methods
- Division
- Care difficulty
- Easy
Ornamental features
- Flowering
- No
Lush, feathery green fronds with a graceful arching form.
Toxicity & Safety
- Toxic to humans
- Non-toxic
- Toxic to pets
- Non-toxic
- Weed potential
- Not considered a weed
Non-toxic to humans and pets, safe to keep around children and animals.
Allergy information
- Allergy risk
- Low
- Allergy triggers
- Mold in soil, Skin contact
- Pollen level
- None
Some people sensitive to plant spores may experience mild allergic reactions such as sneezing or itchy eyes when around this fern. To reduce exposure, keep the plant in well-ventilated areas and avoid disturbing the fronds too much.
Common problems
Overwatering can cause root rot, while too little humidity may lead to brown leaf tips. Low light can slow growth, and pests like spider mites may occasionally appear.
Uses
Primarily grown as an ornamental houseplant for its attractive foliage and air-purifying qualities.
Notes
Prune dead or yellowing fronds to encourage new growth. Repot every 2-3 years to refresh soil and provide space for roots. Sensitive to dry air; regular misting helps.