Brazilian Tree Fern
Blechnum brasiliense
Braziliense
About this plant
Blechnum brasiliense, known as the Brazilian Tree Fern, is a tropical fern with elegant, arching fronds that create a lush, green appearance. It grows like a small tree with a trunk formed by old frond bases. This fern is popular for adding a tropical feel to gardens and indoor spaces. It thrives in shaded, humid environments and is valued for its air-purifying qualities.
Taxonomy
- Genus
- Blechnum
- Family
- Blechnaceae
- Higher classification
- Polypodiopsida (ferns)
- Plant type
- Perennial
- Lifespan
- Perennial
Origin & Distribution
- Native region
- Brazil, South America
- Distribution
- Native to Brazil and other parts of South America; cultivated in tropical and subtropical regions worldwide.
Care
- Light preference
- Partial shade
- Suitable locations
- Indoor, Outdoor, Greenhouse, Balcony
- Preferred window facing
- North-facing, East-facing, Northeast-facing
- Watering frequency
- Moderate
- Watering interval
- 3–7 days
- Humidity
- High
- Minimum
- 10 °C
- Maximum
- 30 °C
- Optimal
- 18-24 °C
- USDA hardiness zones
- 9-11
- Soil pH
- 5.5-6.5 (slightly acidic to neutral)
- Soil type
- well-draining, rich organic soil with good moisture retention
Watering. Keep soil consistently moist but not waterlogged. Water when the top inch of soil feels dry. Increase humidity by misting regularly or using a humidity tray.
Fertilizing. Feed with a balanced, water-soluble fertilizer diluted to half strength every 4 to 6 weeks during the growing season (spring and summer). Avoid fertilizing in winter when growth slows.
Blechnum brasiliense is a tropical fern that prefers indirect light and consistently moist soil. It can be sensitive to dry air and overwatering, so maintaining moderate humidity and proper drainage is important. Regular misting and avoiding direct sunlight help keep it healthy.
Propagation
- Propagation methods
- Division, Cuttings
- Care difficulty
- Medium
Ornamental features
- Flowering
- No
Large, glossy, arching fronds forming a tree-like shape; rich green foliage adds tropical appeal.
Toxicity & Safety
- Toxic to humans
- Non-toxic
- Toxic to pets
- Non-toxic
- Weed potential
- Not considered a weed
Non-toxic to humans and pets, making it safe for homes with children and animals.
Allergy information
- Allergy risk
- Low
- Allergy triggers
- Skin contact
- Pollen level
- None
Blechnum brasiliense is generally safe for most people and does not commonly cause allergies. However, if you have sensitive skin, avoid direct contact with the plant's sap to prevent mild irritation. Keep it away from children and pets to be safe.
Common problems
Common problems include yellowing leaves from too much direct sun or dry air, and root rot caused by overwatering or poor drainage. Pests are rare but watch for scale insects.
Uses
Primarily grown as an ornamental plant for its attractive foliage and tropical appearance. Also used in shaded garden areas and indoor decoration.
Notes
Prune old or damaged fronds to encourage new growth. Repot every 2-3 years to refresh soil and provide space for roots. Sensitive to cold drafts and temperatures below 10°C (50°F).