Australian Tree Fern Plant Care

Australian Tree Fern (Cyathea cooperi) belongs to the Cyatheaceae family within the Cyathea genus. Australian Tree Fern is native to Australia, in New South Wales and Queensland. Australian Tree Fern is also known as Cooper's Tree Fern.

Australian Tree Fern displays a large, tree-like fern growth habit, reaching up to 10 inches tall with a spread of approximately 6 inches. Australian Tree Fern produces non-flowering.

Leaf size: approximately 36 inches.

Cyathea cooperi requires watering every 7–10 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.

Australian Tree Fern thrives in filtered sunlight or partial shade light conditions. The optimal light range is 100–500 lux. Avoid placing Australian Tree Fern in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Cyathea cooperi grows best at temperatures between 60°F and 75°F. Australian Tree Fern prefers humidity levels of 60–80%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Well-draining, rich organic soil with high moisture retention. Good drainage is essential for Australian Tree Fern to prevent waterlogging, which leads to root rot and fungal issues.

Repot every 2-3 years in spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.

Australian Tree Fern can be propagated through spores, division of rhizomes.

Australian Tree Fern is susceptible to aphids, scale insects, mealybugs. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.

Australian Tree Fern grows outdoors in USDA Zone 9a – 11. Native to Australia, in New South Wales and Queensland, Australian Tree Fern is adapted to warm climates. In cooler regions, grow Australian Tree Fern as a houseplant or bring it indoors before the first frost.