Cyathea australis (Rough Tree Fern)
Cyathea australis (Rough Tree Fern)
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Cyathea australis, commonly known as the Rough Tree Fern, is a majestic evergreen fern that adds a tropical and lush atmosphere to gardens. With large, arching fronds and a textured trunk, it creates striking vertical interest and a natural canopy for shaded areas. This fern thrives in moist, well-drained soils and is perfect for creating a rainforest-inspired garden or a serene focal point in larger landscapes.
Ideal for partial shade locations, Rough Tree Fern is hardy and low-maintenance once established. Its slow-growing nature ensures long-term structure and elegance, while its adaptability allows it to flourish in a variety of soil types, adding vibrant green foliage year-round.

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Mature height
2.5–4 metres
Mature width
2.5–4 metres
Spacing
2.5–4 metres
Evergreen/Deciduous
Evergreen
Foliage
Vibrant deep green fronds; textured brown trunk
Flowering Period & Fruit Development/Harvest
Not applicable (fern; reproduces via spores)
Sun tolerance
Partial shade
Maintenance
Low-maintenance; occasional watering and mulching to retain soil moisture
Root System
Fibrous, spreading root system suitable for well-drained soil