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Large fronds radiate from the top and open into a broad lightly umbrella-shaped crown.
Cyathea australis 12cm — Care & Tips
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It was here before the dinosaurs. And it will remain after us 🦕
Family: Cyatheaceae · Pot diameter: 14 cm · Height: approx. 30 cm
Alsophila australis lifts a broad airy crown above a rough fibrous base and immediately brings the atmosphere of an Australian gully into a setting. Large fresh green fronds open into finely repeated pinnae, creating a striking vertical silhouette and collectable presence for a sheltered terrace or generous tropical corner.
The crown appears abundant without becoming heavy because every frond divides into many fine units that move lightly. Alone it works as an architectural focal point, while beside broader dark foliage it creates a dramatic shift in height and texture.
A tall line, rough base and finely divided crown combine into a clear tree-fern silhouette.
Large fronds radiate from the top and open into a broad lightly umbrella-shaped crown.
Fresh to deep green is accented by darker scales and fibres at the bases of the stalks.
Repeated division creates a fine surface, while the stem remains rough and strong.
Why you’ll love it: It brings dramatic height and movement with an airy crown and an authentically rough tree-fern base.
In a sheltered courtyard, shaded terrace or generous bright corner, with clear height and room around the crown. It looks best alone or as the tall centre of a green grouping, beside stone, wood and calm matt surfaces.
Choices with compatible light needs and contrasting textures keep the arrangement balanced.
Bright shade or strong filtered light, without harsh direct sun.
Keep the mix consistently and gently moist, with complete drainage and no deep drying.
Higher humidity, good airflow and roughly 16–27°C. Protect fully from frost and cold draughts.
Not known for marked toxicity, although the foliage is not intended for chewing.
Leave clear space around and above the crown so new fronds can unfurl without rubbing. Avoid harsh direct sun.
Check the mix often and water before it dries deeply. Complete drainage and consistency matter more than a rigid schedule.
During active growth keep the fibrous stem lightly moist, especially on larger plants. In cold weather do not let water stand in the growing point.
Maintain a warm, steady atmosphere with bright shade and protection from cold draughts. The tropical crown responds quickly to low temperatures or dry air.
Use an organic mix that holds gentle moisture while draining quickly. Keep the base at the same height when repotting.
Apply the recommended product according to its label while new growth is active. Do not feed a dry or stressed root zone.
Alsophila australis is native to eastern and south-eastern Australia, from Queensland to Tasmania.
It occurs in moist subtropical forest, cool gullies and sheltered slopes with rich organic litter.
The older name Cyathea australis remains widely known in trade; the accepted name is Alsophila australis.
From natural habitat to care: Cool moist gullies explain the preference for bright shade, steady moisture and protection from dry wind, strong summer sun and frost while the plant is young.
Rough scales and persistent stalk bases give the developing stem its recognisably uneven surface.
All new fronds emerge successively from the central point at the top of the stem and open radially.
Support comes from the central axis, persistent bases and roots rather than the woody trunk of a flowering tree.
Its range from subtropical Queensland to Tasmania shows ecological breadth, yet a young potted plant remains more sensitive to extremes.
Practical answers about growth and the plant’s most common signals.
Yes, this is the same species. Cyathea australis is an older name still common in trade, while Alsophila australis is the accepted name.
Dry air, uneven watering, hot wind or mineral build-up are common causes. Check the position and root zone first, then remove only tissue that is fully dry.
Keep the mix gently and evenly moist with complete drainage. During active growth, larger plants also benefit from moistening the fibrous stem, without leaving water in the crown during cold weather.
When roots fill the pot, growth becomes constrained or the plant turns unstable. Work during active growth, move up one size and keep the base at the same height.
Remove only fronds that are fully dry or damaged, using a clean tool near the base. Do not disturb new curled fronds while they are unfurling.
It is not known for marked toxicity, although any plant material may cause discomfort if eaten. Prevent persistent chewing and seek veterinary advice if needed.