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Description
Austroblechnum lanceolatum, also known as lance-leaved fern or “alambre” in Chile, is a species of fern that belongs to the Blechnaceae family. It is a native of South America, specifically found in Argentina, Bolivia, Brazil, Chile, and Peru. The fern grows in a clumping habit and is deciduous, meaning it sheds its leaves during the winter season.
Taxonomic Information
| Domain | Eukarya |
| Kingdom | Plantae |
| Phylum | Pteridophyta |
| Class | Polypodiopsida |
| Order | Polypodiales |
| Family | Blechnaceae |
| Genus | Austroblechnum |
Appearance
The Austroblechnum lanceolatum has an upright growth habit and can reach a height of up to 70cm. It typically produces fronds that are lance-shaped and can grow up to 60cm in length. The leaves are a vibrant green color with a glossy texture, and their margins are slightly serrated. The fern also produces fertile fronds that are taller than sterile fronds and have light brown spores on their undersides.
Care Guide
Water: Austroblechnum lanceolatum requires regular watering, and the soil should be kept moist but not waterlogged. The fern is sensitive to drought and may wilt if it doesn’t receive enough water.
Fertilization: The fern benefits from regular fertilization during the growing season, typically from spring to autumn. Use a balanced, slow-release fertilizer that is specifically designed for ferns.
Soil: The Austroblechnum lanceolatum prefers well-draining soil that is rich in organic matter. The soil should be slightly acidic, with a pH of 5.5 to 6.5.
Sunlight: The fern prefers to grow in partial shade or filtered sunlight. Direct sunlight can scorch its leaves and cause damage.
Hardiness Zones: Austroblechnum lanceolatum is hardy in USDA zones 7 to 11.
Common Pests & Diseases
Austroblechnum lanceolatum is generally resistant to pests and diseases. However, it may be susceptible to spider mites and mealybugs if grown in dry conditions. Overwatering or poor drainage can also lead to root rot.
Habitat
Austroblechnum lanceolatum is commonly found in moist, shady areas such as forests, woodlands, and along riverbanks. It is native to South America and can be found in Argentina, Bolivia, Brazil, Chile, and Peru.
Question and Answer
Q: Can Austroblechnum lanceolatum grow indoors?
A: Yes, the fern can be grown indoors as long as it receives filtered sunlight and is kept in a humid environment.
Q: How often should I fertilize Austroblechnum lanceolatum?
A: The fern should be fertilized every 2 to 4 weeks during the growing season.
Q: Can Austroblechnum lanceolatum tolerate dry conditions?
A: No, the fern is sensitive to drought and requires regular watering.
Q: What is the best time to prune Austroblechnum lanceolatum?
A: The fern can be pruned in late winter or early spring before new growth appears.
Related Plants
- Austroblechnum magellanicum
- Austroblechnum penna-marina
- Austroblechnum schaffneri
References
1. Flora of North America. (n.d.). Austroblechnum. Retrieved from http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=105383
2. The Plant List. (2013). Austroblechnum lanceolatum. Retrieved from http://www.theplantlist.org/tpl1.1/record/tro-26601523
