Image: AI generated
Australian Tree Fern Plant Care
Cyathea cooperi (Hook. ex F.Muell.) Domin
Updated · Sources · How we source care data
Sphaeropteris cooperi, synonym Cyathea cooperi, also known as lacy tree fern, scaly tree fern, coin spot tree fern, or Cooper's tree fern, is a tree fern native to Australia, in New South Wales and Queensland.
Every 7–10 days
Filtered sunlight or partial shade
60–75°F
60–80%
At a glance
How do you care for Australian Tree Fern?
Water Australian Tree Fern every 7–10 days, letting the top layer of soil dry out between waterings, and give it filtered sunlight or partial shade. It prefers temperatures of 60–75°F (16–24°C) and 60–80% humidity. Fertilize it every 6 months during the growing season.
Where Is the Australian Tree Fern Native To?
What Is the Australian Tree Fern?
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 ft tall with a spread of approximately 6 ft. Australian Tree Fern produces non-flowering.
Leaf size: approximately 36 inches.
How Often Should You Water a Australian Tree Fern?
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.
Watering Frequency
Every 7–10 days
Let soil partially dry between waterings
What Light Does the Australian Tree Fern Need?
Australian Tree Fern thrives in filtered sunlight or partial shade. Avoid placing Australian Tree Fern in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Filtered sunlight or partial shade
What Temperature and Humidity Does the Australian Tree Fern Prefer?
Cyathea cooperi grows best at temperatures of 60–75°F. Australian Tree Fern prefers humidity levels of 60–80%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
60–75°F
Humidity
60–80%
What Soil Mix Works Best for a Australian Tree Fern?
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.
How Often Should You Fertilize a Australian Tree Fern?
Feed Australian Tree Fern every 6 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Australian Tree Fern?
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.
How Do You Propagate a Australian Tree Fern?
Australian Tree Fern can be propagated through spores, division of rhizomes.
Is the Australian Tree Fern Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Australian Tree Fern, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Australian Tree Fern?
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.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Australian Tree Fern Need?
Australian Tree Fern grows outdoors in USDA Zone 9a – 11. It survives winters down to planting zone 9a. Australian Tree Fern is native to Australia, in New South Wales and Queensland. In cooler regions, grow Australian Tree Fern as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 9a – 11
Keep exploring plants
Australian Tree Fern is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Cyathea genus — compare its care with other Cyathea species on PlantoScan.
Cyathea is part of the Cyatheaceae plant family — browse all Cyatheaceae genera and species.
Australian Tree Fern produces blooms — browse other flowering plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Cyathea cooperi (Hook. ex F.Muell.) Domin, family Cyatheaceae (first published in Pteridophyta : 262 (1929)) — World Flora Online record, IPNI name record, Wikidata.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Australian Tree Fern, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Photo: AI-generated illustration (labelled on the image).
- Hardiness zone: USDA Zone 9a – 11, estimated from the plant's typical growing conditions.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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