Australian tree fern (Alsophila australis)
Care, watering, light and tips for Australian tree fern on Floravia.
Quick facts
- Family: Cyatheaceae
- Difficulty: Moderate care
- Watering: every 3 days
- Light: Partial shade
- Temperature: 10–30 °C
About Australian tree fern
Alsophila australis, also known as Cyathea cooperi or Australian tree fern, is a fast-growing arborescent fern native to the forested areas of Australia. Its large, finely divided, bright green fronds emerge from a slender, scaly trunk, creating an elegant and tropical appearance. It is ideal for adding an exotic touch to shady gardens and protected patios, or as a large indoor plant in colder climates.
Native range
Eastern Australia
Care tips
It prefers partial to full shade, avoiding intense direct sunlight which can scorch its fronds. It requires abundant and consistent watering to keep the substrate moist, especially in hot and dry climates, and benefits from high ambient humidity. Use a rich, organic, and well-draining substrate. A common mistake is allowing the substrate to dry out completely, which can cause frond wilting and death.
How to save a dying Australian tree fern
- Warning signs
- Dry, brittle, yellowing or brown fronds, especially at tips. Stunted growth.
- First aid
- Increase humidity with frequent misting. Check watering; keep soil consistently moist, not soggy. Move to bright, partial shade.
- What kills it
- Dry air, lack of constant humidity, and direct sun exposure, which scorches its delicate fronds.
- Can it be saved?
- Yes, if roots are healthy. With proper humidity and shade, it can regrow.